The OE tire sizes for the Yamaha YZ250FX (2019–present) are 80/100-21 front / 110/100-18 rear. Below are tires in these sizes, compared across brands. OE rim widths are F1.60 / R2.15 (from official specs; used for the rim-width check). OE sizes can differ by model year and market — the sidewall of your own bike is the sure reference. This is a Japanese-market lineup; the sizes themselves are international.
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Tires that cover front and rear (17 models)
Front + rear set: 17 models can cover both ends (matching sizes in bold, based on F=80/100-21 / R=110/100-18). Shop links search on the model name alone. “Narrower” means one or two steps below the OE size. “Rim width OK” means the tire maker’s published rim widths line up with the OE rim width. No badge means we could not confirm it; combinations we found to be wrong are left out entirely.
Dunlop calls it a “wide-range medium-hard,” “covering medium through hard surfaces.” Not street legal.
Sizes: F 60/100-10, 60/100-12, 60/100-14, 70/100-17, 70/100-19, 80/100-21 / R 70/100-10, 80/100-12, 90/100-14, 90/100-16, 100/100-18, 110/100-18, 120/90-18, 100/90-19, 110/90-19, 120/80-19, 120/90-19
Where to buy
Dunlop calls it a “wide-range medium,” for medium surfaces broadly. Not street legal.
Sizes: F 60/100-10, 60/100-12, 60/100-14, 70/100-17, 70/100-19, 80/100-21 / R 70/100-10, 80/100-12, 90/100-14, 90/100-16, 100/100-18, 110/100-18, 120/90-18, 100/90-19, 110/90-19, 120/80-19, 120/90-19
Where to buy
Dunlop calls it a “wide-range soft,” “covering mud through medium surfaces.” Replaces the MX33, which is no longer in the official lineup. Not street legal.
Sizes: F 60/100-12, 60/100-14, 70/100-17, 70/100-19, 80/100-21 / R 70/100-10, 80/100-12, 90/100-14, 90/100-16, 100/100-18, 110/100-18, 120/90-18, 100/90-19, 110/90-19, 120/80-19, 120/90-19
Where to buy
Pirelli aims it at “varied terrain from mid-soft to mid-hard, balanced for both practice and racing.” Not listed on Pirelli’s Japanese site; confirmed on the English one. Competition only (NHS).
Sizes: F 80/100-21 / R 100/100-18, 110/100-18, 100/90-19, 110/90-19, 120/90-19
Where to buy
Bridgestone lists it for “soft surfaces (SOFT).” Not for public roads (Bridgestone’s own statement).
Sizes: F 80/100-21, 90/100-21 / R 110/100-18, 100/90-19, 110/90-19, 120/80-19
Where to buy
Bridgestone lists it for “intermediate surfaces (MEDIUM).” Still sold alongside the X31. Not for public roads (Bridgestone’s own statement).
Sizes: F 80/100-21 / R 100/100-18, 110/100-18, 110/90-19
Where to buy
Bridgestone lists it as “the latest model for intermediate surfaces (MEDIUM).” Not for public roads (Bridgestone’s own statement).
Sizes: F 80/100-21, 90/100-21 / R 110/100-18, 100/90-19, 110/90-19, 120/80-19
Where to buy
Bridgestone lists it for “hard surfaces (HARD).” Not for public roads (Bridgestone’s own statement).
Sizes: F 80/100-21, 90/100-21 / R 110/100-18, 100/90-19, 110/90-19, 120/80-19
Where to buy
Motocross, for intermediate-to-soft ground. Michelin presents the Starcross 6 as “the latest in the series, with durability as the focus.” Competition use.
Sizes: F 80/100-21, 90/100-21 / R 110/100-18, 120/90-18, 100/90-19, 110/90-19, 120/80-19
Where to buy
Motocross, for intermediate-to-hard ground. Michelin cites “silica technology” and “use in many races, world championship rounds included.” Competition use.
Sizes: F 80/100-21, 90/100-21 / R 110/100-18, 120/90-18, 100/90-19, 110/90-19, 120/80-19
Where to buy
IRC states it is a “tire dedicated to hard enduro.” Its case is grip and climbing ability on rock, roots and stream beds — the tire that made “gummy” a category. Not street legal (IRC’s own statement).
Sizes: F 80/100-21 / R 90/100-16, 110/100-18
Where to buy
VE-35 front, VE-33 rear. IRC optimises this pair for the 250 class; a long-standing enduro default. Not street legal (IRC’s own statement).
Sizes: F 80/100-21 / R 110/100-18
Where to buy
Dunlop’s pitch is “control and impact absorption that adapt to any surface” — the general-purpose, durability-first all-terrain. Not street legal.
Sizes: F 80/100-21, 90/100-21 / R 110/100-18, 120/90-18
Where to buy
Dunlop notes the “trials super-soft compound” and grip “where it gets tough, such as rock sections.” For the difficult stuff. Not street legal.
Sizes: F 80/100-21 / R 110/100-18
Where to buy
Pirelli lists it as “cross-country only, for soft to medium ground — mud, sand, dirt, gravel.” Not listed on Pirelli’s Japanese site; confirmed on the English one. Competition only (NHS).
Sizes: F 80/100-21 / R 110/100-18, 120/100-18, 140/80-18
Where to buy
Pirelli aims it at “cross-country on medium to hard ground.” Not listed on Pirelli’s Japanese site; confirmed on the English one. Competition use (sizes marked NHS).
Sizes: F 80/100-21 / R 100/100-18, 110/100-18, 120/100-18, 140/80-18
Where to buy
Generally known as an all-rounder for enduro through trail use. Street legality in Japan cannot be read off the official page, so we leave it unconfirmed.
Sizes: F 80/100-21, 90/90-21 / R 100/100-18, 110/100-18, 120/90-18, 140/80-18
Where to buy
Front 80/100-21 options (60 total, 17 of them listed in the set section above)
Size 80/100-21: 31 exact, 26 in the same group, 3 narrower. 6 with no size data on file are out of scope. Shop links carry each tire’s own matching size. “Narrower” means one or two steps below the OE size. “Rim width OK” means the tire maker’s published rim widths line up with the OE rim width. No badge means we could not confirm it; combinations we found to be wrong are left out entirely.
Dunlop calls it a “wide-range hard” tire, “covering hard through medium surfaces.” Not street legal.
Sizes: F 70/100-17, 70/100-19, 80/100-21, 90/100-21 / R 90/100-14, 90/100-16, 110/90-18, 120/90-18, 110/90-19, 120/80-19
Where to buy
Dunlop calls it a “wide-range sand,” for mud through sand. Scoop-shaped knobs, sand-specific. Not street legal.
Sizes: F 80/100-21
Where to buy
Pirelli claims “peak performance on soft to mid-soft ground — mud, sand, grass, dry dirt.” A revised New MX32 Mid-Soft is sold alongside it. Competition only (NHS).
Sizes: F 2.50-10, 60/100-12, 60/100-14, 80/100-14, 70/100-17, 70/100-19, 80/100-21 / R 2.75-10, 80/100-12, 90/100-14, 90/100-16, 110/90-17, 100/90-19, 70/100-19
Where to buy
Bridgestone lists it for “muddy surfaces (MUD)” — a race-developed tire. Not for public roads (Bridgestone’s own statement).
Sizes: F 80/100-21 / R 90/100-16, 100/90-19, 110/90-19
Where to buy
IRC positions it as a soft-to-mud tire “suited to hard enduro and cross-country.” The 140 is aimed at mud racing, the 120 at cross-country. Not street legal (IRC’s own statement).
Sizes: F 80/100-21, 90/100-21 / R 120/80-18, 140/80-18
Where to buy
GP-21 front, GP-22 rear. IRC calls it an all-rounder “covering the range of surfaces you expect on a forest-road tour.”
Sizes: F 110/80-17, 70/100-19, 2.75-21, 3.00-21, 80/100-21 / R 120/90-16, 90/100-16, 130/80-17, 140/70-17, 4.60-17, 120/80-18, 4.10-18
Where to buy
Successor to the TR-8 that came as OE on the European-spec XR250. IRC positions it as an on/off tire “weighted toward off-road ability,” aimed at riders who actually want to clear a trail.
Sizes: F 80/100-19, 2.75-21, 3.00-21, 80/100-21 / R 120/90-16, 120/80-18, 4.10-18, 4.60-18
Where to buy
IRC describes it as a tire for “mainly paved riding, with flat dirt still on the menu.” For riders who are on the road most of the time and hit a forest road now and then.
Sizes: F 110/80-17, 2.75-21, 3.00-21, 80/100-21 / R 120/90-16, 120/80-18, 4.60-18
Where to buy
IRC puts asphalt first here: “grip and water dispersal built around riding on pavement.” For keeping the dirt-bike look while riding mostly on the road.
Sizes: F 100/90-19, 80/100-19, 2.75-21, 3.00-21, 80/100-21 / R 120/90-16, 130/80-17, 120/80-18, 4.10-18, 4.60-18
Where to buy
Bridgestone files it as an on/off tire that is “mainly OFF.” ED03 front, ED04 rear. It comes in the DR-Z400’s OE size, so it is street legal.
Sizes: F 80/100-21 / R 120/90-18
Where to buy
Bridgestone’s “city off-roader’s standby” — all-round ability and long life. Comes in the WR250R’s OE size. ★ Only one size, 3.00-21, is still listed, and it is marked while-stocks-last — availability is the problem here ★
Sizes: F 2.75-21, 3.00-21, 80/100-21 / R 110/80-18, 120/80-18, 4.10-18, 4.60-18
Where to buy
Dunlop describes “a knob shape that resists squirm to hold off side-slip, and a tacky high-grip compound that clings to rock.” Replaces the old D803GP. Competition use.
Sizes: F 80/100-21 / R 120/100R18
Where to buy
Competition trials. Street legality in Japan cannot be read off the official page, so we leave it unconfirmed.
Sizes: F 80/100-21 / R 120/100R18
Where to buy
Bridgestone describes “an off-road-leaning adventure tire refined for rough-road ability and durability.” 24 sizes in all, which is a wide net. Street legal.
Sizes: F 100/90-18, 100/90-19, 110/80B19, 120/70B19, 90/100-19, 2.75-21, 3.00-21, 80/100-21, 90/90-21 / R 120/90-16, 120/90-17, 130/80-17, 130/80B17, 140/80B17, 150/70B17, 170/60B17, 4.60-17, 120/80-18, 120/90-18, 130/80-18, 150/70B18, 4.00-18, 4.10-18, 4.60-18
Where to buy
Dunlop describes it as an FIM-compliant enduro tire built for “traction and durability across varied ground, forest roads and rocky sections included.” Competition use.
Sizes: F 90/90-21 / R 120/90-18, 140/80-18
Where to buy
An FIM-compliant enduro tire, still sold alongside the EN92. Competition use.
Sizes: F 90/90-21 / R 120/90-18, 140/80-18
Where to buy
Pirelli describes an on/off knobby “for dunes, gravel and cross-country through to asphalt.” Street legal, and the standard answer for serious dirt on a road-legal tire.
Sizes: F 80/90-21, 90/90-21 / R 120/90-17, 130/90-17, 110/80-18, 120/80-18, 120/90-18, 140/80-18
Where to buy
Bridgestone calls it an “FIM-compliant enduro tire that handles any surface.” The official page carries no not-for-road marking and the sizes have speed symbols, but street legality is not stated either — so we leave it unconfirmed.
Sizes: F 90/90-21 / R 120/90-18, 140/80-18
Where to buy
OE on KTM’s EXC family. Maxxis states it is an “E-marked road legal enduro tyre” and “original equipment on select KTM models.” M7313 front, M7314 rear.
Sizes: F 90/90-21 / R 140/80-18
Where to buy
FIM-style enduro, for intermediate ground. The older Enduro Medium is still listed alongside it. Street legality in Japan cannot be read off the official page, so we leave it unconfirmed.
Sizes: F 90/90-21, 90/100-21
Where to buy
A trail tire in the F21 / R17 layout. Dunlop’s own description is brief.
Sizes: F 90/90-21 / R 120/80-17, 130/80-17
Where to buy
Dunlop calls it “strong grip off-road, ideal for forest-road touring” — the dirt-leaning trail tire.
Sizes: F 2.75-21, 3.00-21 / R 4.60-17, 120/80-18, 120/90-18, 4.10-18, 4.60-18, 100/90-19
Where to buy
Dunlop calls it an “all-round trail tire, stable from dirt through pavement.” A tubeless version for the Serow exists.
Sizes: F 70/100-19, 2.75-21, 3.00-21 / R 90/100-16, 4.60-17, 120/80-18, 4.10-18, 4.60-18
Where to buy
The road-leaning trail tire; Dunlop cites “stability on pavement and wear resistance.”
Sizes: F 110/80-14, 80/90-17, 2.75-21, 3.00-21 / R 130/70-13, 80/90-17, 120/80-18, 4.10-18, 4.60-18
Where to buy
Dunlop traces it “straight from US dirt-track racing,” for “trackers and customs, on dirt and in town.”
Sizes: F 120/80-12, 100/90-19, 3.00-21 / R 120/90-10, 130/90-10, 100/90-12, 120/80-12, 130/80-12, 180/80-14, 120/90-18, 130/80-18
Where to buy
Pirelli describes a knobby on/off tire “optimised for road use on enduro machines while keeping off-road ability.”
Sizes: F 90/90-21 / R 120/90-17
Where to buy
Bridgestone calls it a “pattern purely for road use on off-road machines.” Slick-like tread with deep grooves, chasing long life and high-speed stability — it has given up on forest roads entirely. For commuting and town riding on a dirt bike.
Sizes: F 3.00-21 / R 4.10-18, 4.60-18, 120/80-18
Where to buy
Continental’s long-standing “rides the street, rides the dirt” tire, at a 50:50 split. Its official PDF states it is OE on the KTM 690 Enduro R, the Husqvarna 701 Enduro and the Triumph TF 450-E. The big knobs bite hard in dirt and wear accordingly. Unusually for the class it goes down to 21-inch tube sizes (2.50-21 to 3.00-21). From 2026 the second-generation TKC 80² is sold alongside it, so check which one you are buying.
Sizes: F 120/70-17, 100/90-19, 110/80B19, 120/70-19, 2.50-21, 2.75-21, 80/90-21, 3.00-21, 90/90-21 / R 120/90-17, 130/80-17, 5.10-17, 140/80-17, 150/70B17, 170/60B17, 180/55B17, 3.25-18, 3.50-18, 4.00-18, 4.10-18, 110/80-18, 120/90-18, 140/80-18, 150/70B18
Where to buy
Dunlop calls it “a rally tire based on the D908, adapted to heavy, large-displacement machines.” Marked competition use on the official page.
Sizes: F 90/90-21 / R 140/80-18, 150/70B18
Where to buy
Dunlop’s pitch is “stronger rough-road ability for heavy adventure bikes, with durability on dirt and rock alongside on-road performance.” Widely reckoned to last.
Sizes: F 110/80-19, 120/70B19, 90/90-21 / R 150/70B17, 170/60B17, 150/70B18
Where to buy
Dunlop aims it at “adventure touring, balancing dirt ability against on-road cruising.” The road-leaning end of the range.
Sizes: F 120/70R17, 110/80R19, 120/70R19, 90/90-21 / R 160/60R15, 150/70R17, 160/60R17, 170/60R17, 150/70R18
Where to buy
Dunlop’s stated aims are “off-road ability, long-distance comfort and stability under load.” OE on the current Africa Twin.
Sizes: F 90/90-21 / R 150/70R18
Where to buy
Pirelli describes a full-knobby “derived from desert rally and rally raid, for high-speed straight-line stability and traction on punishing ground.” Street legal.
Sizes: F 110/80R19, 120/70R19, 90/90-21 / R 150/70R17, 170/60R17, 140/80-18, 150/70R18
Where to buy
Pirelli’s pitch is an on/off touring tire that “combines traction on dirt with stability on pavement.” Knobby to look at, road-leaning to ride.
Sizes: F 110/80-14, 110/70R17, 120/70R17, 110/80R18, 120/70R18, 100/90-19, 110/80R19, 120/70R19, 90/90-21 / R 130/70-13, 160/60R15, 120/90-17, 130/80R17, 140/80R17, 150/60R17, 150/70R17, 170/60R17, 180/55R17, 140/70R18, 150/70R18
Where to buy
Pirelli covers “daily use in town through to weekend adventure,” on and off pavement, across all displacements.
Sizes: F 110/80-18, 80/90-21, 90/90-21 / R 120/90-17, 110/80-18, 120/80-18, 140/80-18, 150/70R18
Where to buy
Bridgestone’s line is “adventure that starts in town.” The pattern is knobby, but their own recommendation is for “customers who enjoy on-road touring on adventure machines” — between the dirt-leaning AX41 and the road-leaning A41. Built around wet traction and braking. Where the sidewall is marked “USE TUBE ON TUBE TYPE RIM,” it can be fitted to a tube-type rim with a suitable tube.
Sizes: F 110/80R19, 120/70R19, 90/90-21 / R 130/80R17, 150/70R17, 170/60R17, 150/70R18
Where to buy
A knobby adventure tire, and the usual answer for taking a big ADV bike onto dirt.
Sizes: F 110/80R19, 120/70R19, 80/90-21, 90/90-21 / R 130/80-17, 140/80-17, 150/70R17, 170/60R17, 110/80-18, 120/80-18, 130/80-18, 140/80-18, 150/70R18
Where to buy
The road-leaning adventure touring tire. For mostly-pavement riding with the occasional flat dirt road.
Sizes: F 120/70R17, 110/80R18, 110/80R19, 120/70R19, 90/90-21 / R 150/70R17, 170/60R17, 180/55R17, 150/70R18
Where to buy
The predecessor to the Anakee Adventure 2. Still in the 2026 catalogue alongside it, and it holds sizes the 2 does not — 130/80R17, 140/80R17, 160/60R17, 100/90-19 among them.
Sizes: F 120/70R17, 110/80R18, 100/90-19, 110/80R19, 120/70R19, 90/90-21 / R 130/80R17, 140/80R17, 150/70R17, 160/60R17, 170/60R17, 180/55R17, 150/70R18
Where to buy
The most road-biased of the Anakee family. The catalogue files it under Trail, but the tread is essentially an on-road pattern. For large adventure bikes that do not go on dirt.
Sizes: F 110/80R19, 120/70R19, 120/70ZR19, 90/90-21 / R 150/70R17, 170/60R17, 170/60ZR17, 150/70R18
Where to buy
IRC calls it a “well-balanced all-rounder.”
Sizes: F 2.75-21 / R 3.00-17, 3.00-18, 4.10-18
Where to buy
IRC states it is “a street-legal trials tire developed from the TR-011.” Very strong on wet rock, and it covers everything from trials play to forest roads. The default choice among Serow riders.
Sizes: F 2.75-21 / R 4.00-18
Where to buy
A street-legal tire on a trials pattern (Pirelli states road use is permitted). Not listed on Pirelli’s Japanese site; confirmed on the English one.
Sizes: F 2.75-21 / R 4.00-18
Where to buy
Rear 110/100-18 options (21 total, 17 of them listed in the set section above)
Size 110/100-18: 21 exact, 0 in the same group. 6 with no size data on file are out of scope. Shop links carry each tire’s own matching size.
Dunlop calls it a “wide-range sand,” for mud through sand. Unusually broad size range, 10 to 19 inch. Not street legal.
Sizes: R 70/100-10, 80/100-12, 90/100-14, 90/100-16, 110/100-18, 100/90-19, 110/90-19, 120/80-19
Where to buy
Bridgestone files it for “muddy surfaces (MUD)” and marks it ■ not for public roads. The series that predates Battlecross. ★ Only one size survives on the official site, the 110/100-18 rear ★ The M102 is directional — check the arrow when fitting.
Sizes: R 110/100-18
Where to buy
IRC says it was “developed for endurocross and hard enduro.” A dual compound stiffens the sidewall for higher speeds and fewer punctures. Not street legal (IRC’s own statement).
Sizes: R 110/100-18, 140/80-18
Where to buy
IRC calls it “the next-generation gummy tire: the same grip, now usable at speed.” Sits between the iX-09W and the VE-33. Not street legal (IRC’s own statement).
Sizes: R 110/100-18, 140/80-18
Where to buy
How to read this
- The 1–5 ratings are our own estimates. Not manufacturer figures, not measurements.
- Within one model, character and street legality both change with the size and the spec. Confirm with the manufacturer or a dealer before you buy.
- Shop links go to search results rather than product pages. Other sizes and older models will be mixed in.
- “Narrower” means one or two steps below the OE size. The “rim width OK” badge means the tire maker's published rim widths line up with the OE rim width; no badge means unconfirmed.
- Competition tires may not be used on public roads.