The OE tire sizes for the KTM 250 DUKE (2026 model) are 110/70R17 front / 150/60R17 rear. Below are tires in these sizes, compared across brands. OE rim widths for this bike are not on file, so no rim-width badges appear. 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 (15 models)
Front + rear set: 15 models can cover both ends (matching sizes in bold, based on F=110/70R17 / R=150/60R17). Shop links search on the model name alone.
Pirelli calls it “the latest of the fastest track tread tires Pirelli makes, and hugely backed on the circuit.” The usage icon is racetrackOnly. Several compounds exist (SC1, SC2 and so on), but Pirelli does not split them by size on the site, so we keep it as one entry.
Sizes: F 110/70R17, 120/70R17 / R 120/70R17, 140/70R17, 150/60R17, 160/60R17, 180/60R17, 190/55R17, 200/55R17, 200/60R17
Where to buy
Pirelli describes “a grooved hypersport tire designed to draw the most out of the bike on road and track alike.” The street-facing version of the SC V4.
Sizes: F 110/70ZR17, 120/70ZR17 / R 140/70ZR17, 150/60ZR17, 180/55ZR17, 180/60ZR17, 190/50ZR17, 190/55ZR17, 200/55ZR17, 200/60ZR17
Where to buy
Pirelli calls it “the high-grip version of the Diablo Rosso IV.” More aggressive than the Rosso IV without throwing away life the way the Supercorsa does — the middle ground.
Sizes: F 110/70ZR17, 120/70ZR17 / R 150/60ZR17, 180/55ZR17, 180/60ZR17, 190/50ZR17, 190/55ZR17, 200/55ZR17, 200/60ZR17
Where to buy
Bridgestone describes “a premium high-grip radial delivering handling, grip and stability in the dry.” Slick-like tread with 3D groove shapes. It has been an OE fitment on Japanese manufacturers’ high-end machines. Bridgestone recommends it for “customers who ride everything from winding roads to the circuit.”
Sizes: F 120/70ZR17, 110/70R17 / R 190/50ZR17, 140/70R17, 150/60R17
Where to buy
Sold alongside the Power Cup 2. This is the one that carries the middleweight sizes — 110/70ZR17, 140/70ZR17 and so on.
Sizes: F 110/70ZR17, 120/70ZR17 / R 140/70ZR17, 150/60ZR17, 160/60ZR17
Where to buy
Pirelli’s Japanese line for it is “banking by pure instinct.” A sport radial. It has 120/60ZR17, which makes it one of the few current sport tires that can do both ends of the CB400SF (NC42), and the small sizes (110/70R17 and so on) are there too.
Sizes: F 110/70R17, 110/70ZR17, 120/60ZR17, 120/70ZR17 / R 140/70R17, 150/60R17, 150/60ZR17, 160/60ZR17, 180/55ZR17, 180/60ZR17, 190/50ZR17, 190/55ZR17, 200/55ZR17, 200/60ZR17, 240/45ZR17
Where to buy
Pirelli calls it “the third generation of the Diablo Rosso family, a road sport tire for dry and wet alike.” The Rosso IV’s predecessor but still sold alongside it, and it keeps small sizes the IV does not — 130/70ZR16, 100/80R17 among them.
Sizes: F 130/70ZR16, 100/80R17, 110/70R17, 110/70ZR17, 120/60ZR17, 120/70ZR17 / R 140/70R17, 150/60R17, 150/60ZR17, 160/60ZR17, 180/55ZR17, 190/50ZR17, 190/55ZR17, 240/45ZR17
Where to buy
Pirelli calls it “Pirelli’s sporty tire for everyday use.” Bias construction, for smaller machines. The 14- to 17-inch small sizes make it one of the few sport options for the Grom, Monkey 125 and CB125R class.
Sizes: F 90/90-14, 100/80-14, 120/70-14, 70/90-17, 80/90-17, 90/80-17, 100/80-17, 110/70-17, 120/70-17 / R 90/90-14, 100/80-14, 100/90-14, 120/70-14, 70/90-17, 80/90-17, 90/80-17, 100/80-17, 110/70-17, 120/70-17, 130/70-17, 140/70-17, 150/60-17
Where to buy
Bridgestone’s line is “the joy of turning, for every rider.” A hypersport radial. The small sizes — 110/70R17, 140/70R17, 150/60R17 — take it down to the CB250R, Z400, Gixxer 250 and MT-03 class.
Sizes: F 110/70R17, 120/70ZR17 / R 140/70R17, 150/60R17, 160/60ZR17, 180/55ZR17, 190/50ZR17, 190/55ZR17, 200/55ZR17
Where to buy
Michelin’s line is “a new standard for the sport tire, riding exactly as you intend.” Successor to the Power 5, and Michelin’s mainstay road sport tire.
Sizes: F 110/70ZR17, 120/70ZR17 / R 140/70ZR17, 150/60ZR17, 160/60ZR17, 180/55ZR17, 190/50ZR17, 190/55ZR17, 200/55ZR17, 240/45ZR17
Where to buy
Michelin’s line is “usable around town while still answering sport riding.” A long seller. The 120/60ZR17 covers the front of the CB400SF (NC42).
Sizes: F 110/70ZR17, 120/60ZR17, 120/70ZR17 / R 150/60ZR17, 160/60ZR17, 170/60ZR17, 180/55ZR17, 190/50ZR17, 190/55ZR17
Where to buy
Dunlop describes an “all-round touring radial covering town riding through to winding roads.” A default for 250–400 radial-shod bikes, and the 120/60ZR17 makes it fit the CB400SF. Dunlop notes explicitly that the rear must not be fitted to rims outside the approved width.
Sizes: F 110/70R17, 120/60R17, 130/70ZR16, 110/70ZR17, 120/60ZR17, 120/70ZR17, 110/80ZR18 / R 140/70R17, 150/60R17, 160/60R17, 140/60R18, 150/60R18, 150/70ZR17, 160/60ZR17, 170/60ZR17, 180/55ZR17, 190/50ZR17
Where to buy
The small-size half of the TS100. Bridgestone uses the same copy for both: “an affordable radial covering town riding through to touring.” It holds the 250-class staples — 110/70R17 front, 140/70R17 and 150/60R17 rear.
Sizes: F 110/70R17 / R 140/70R17, 150/60R17
Where to buy
The mainstay sport tourer, sold on its wet performance. It reaches into 18 and 19 inch, which is a wide net. The catalogue lists it in both the Sport Touring and Trail sections.
Sizes: F 110/70ZR17, 120/60ZR17, 120/70ZR17, 120/70ZR18, 110/80ZR19, 120/70ZR19 / R 140/70ZR17, 150/60ZR17, 150/70ZR17, 160/60ZR17, 170/60ZR17, 180/55ZR17, 190/50ZR17, 190/55ZR17
Where to buy
A radial for small and mid-displacement machines. Mostly 250–400 class sizes such as 110/70R17 and 140/70R17.
Sizes: F 110/70R17 / R 130/70R17, 140/70R17, 150/60R17
Where to buy
Front 110/70R17 options (32 total, 15 of them listed in the set section above)
Size 110/70-17: 32 exact, 0 in the same group. Shop links carry each tire’s own matching size.
Pirelli calls it a “grooved racing tire that is street legal” and a “street-legal racing supersport tire.” ★ The usage icons also include racetrackOnly, so street legality may change with the size and spec ★ The V4 has shrunk its size range: only 110/70ZR17 remains on the Japanese site (as of 10 Aug 2026).
Sizes: F 110/70ZR17
Where to buy
Bridgestone aims it at “customers who enjoy production racing and track days, or who want a race-type tire they can still ride on the street.” A high-grip radial. ★ Only one size survives on the official site, the 110/70R17 front — the rear’s size table is empty ★ Matching the pair means hunting existing stock.
Sizes: F 110/70R17
Where to buy
Dunlop calls it an “all-round sport bias tire, usable from the circuit to the street.” Despite the name, ★ every size is bias construction (no R in the size) ★ — which makes it the sporting option for bias-shod bikes like the MT-25 and the Z250.
Sizes: F 70/90-17, 80/90-17, 90/80-17, 100/80-17, 110/70-17 / R 70/90-17, 80/90-17, 90/80-17, 130/70-17, 140/70-17
Where to buy
Dunlop cites “strong dry grip and aggressive handling.” The name that defines the high-grip bias tire, and it comes in MT-25 / Z250 sizes (110/70-17, 140/70-17).
Sizes: F 100/80-14, 80/90-16, 90/90-16, 100/90-16, 100/80-17, 110/80-17, 110/70-17 / R 120/80-14, 90/90-17, 90/80-17, 100/80-17, 120/80-17, 130/70-17, 140/70-17, 150/70-17, 90/90-18, 100/90-18, 120/80-18, 140/70-18, 150/70-18
Where to buy
Bridgestone calls it “the sport bias standard, with both sport and comfort.” The usual sport bias for the 250 class, balanced further toward touring than the TT900GP. Tubeless in every size.
Sizes: F 90/80-17, 100/80-17, 110/70-17, 110/80-17 / R 130/90-16, 120/70-17, 120/80-17, 130/70-17, 140/70-17, 140/70-18
Where to buy
IRC highlights the “fresh pattern with very wide S-shaped grooves” and the “absolute confidence it gives the rider.” ★ Every size is WT (tube type), so it will not suit a tubeless wheel ★ The limited-run SPEC R is out of the current lineup and is not listed here.
Sizes: F 110/70-17 / R 120/70-17, 130/70-17
Where to buy
IRC calls it “a modern road-going bias tire tuned for the quarter-litre class.” Unlike the RX-01 every size is tubeless, and it covers the MT-25 / Z250 sizes (110/70-17, 140/70-17).
Sizes: F 100/80-17, 110/70-17, 110/80-17, 120/70-17 / R 120/80-17, 130/70-17, 130/80-17, 140/70-17, 150/70-17, 140/70-18, 150/70-18
Where to buy
The default bias tire for the 250 class. Dunlop credits “grip and long life from the latest compound.” A broad size range that covers most 17- to 19-inch naked bikes.
Sizes: F 100/90-16, 120/80-16, 70/90-17, 100/80-17, 110/70-17, 110/80-17, 120/70-17, 90/90-18, 100/80-18, 100/90-18, 110/90-18, 100/90-19 / R 130/90-16, 80/90-17, 120/80-17, 130/70-17, 130/90-17, 140/70-17, 150/70-17, 110/80-18, 110/90-18, 120/80-18, 120/90-18, 130/70-18, 130/80-18, 140/70-18, 150/70-18
Where to buy
A standard bias tire in 17 and 18 inch. Dunlop marks the 140/80-17 and 150/70-18 as while-stocks-last.
Sizes: F 110/80-17, 110/70-17, 120/70-17, 110/80-18, 120/70-18 / R 140/80-17, 140/70-17, 150/70-17, 160/70-17, 150/70-18
Where to buy
A bias tire for small and mid-displacement 17-inch wheels. The 110/70-17 comes in both tube type (WT) and tubeless (TL); the WT is the fitment for the Honda XR230 Motard (’08 on). ★ WT and TL suit different wheels, so confirm which you need before buying ★
Sizes: F 110/70-17 / R 130/70-17, 140/70-17
Where to buy
Sport touring on a bias construction. One of very few current tires offered in both 100/90-19 and 130/70-18, which lets you set up a GB350 front and rear on the sporting side.
Sizes: F 110/90-16, 120/80-16, 110/70-17, 110/80-17, 120/70-17, 100/90-18, 110/80-18, 110/90-18, 100/90-19 / R 130/90-16, 150/80-16, 130/70-17, 130/80-17, 130/90-17, 140/70-17, 150/70-17, 120/90-18, 130/70-18, 130/80-18, 140/70-18
Where to buy
The touring bias standard. Bridgestone’s line is “wet performance you can lean on — the definitive touring bias, further developed.” First choice if you ride in the rain.
Sizes: F 100/90-16, 110/90-16, 120/80-16, 100/80-17, 110/70-17, 110/80-17, 120/70-17, 90/90-18, 100/80-18, 100/90-18, 110/80-18, 110/90-18, 3.25-19, 100/90-19, 90/90-21 / R 130/90-16, 150/80-16, 120/80-17, 120/90-17, 130/70-17, 130/80-17, 130/90-17, 140/70-17, 140/80-17, 150/70-17, 4.00-18, 110/80-18, 110/90-18, 120/80-18, 120/90-18, 130/70-18, 130/80-18, 140/70-18, 150/70-18
Where to buy
Bridgestone files it as an “on-road high-performance type” bias tire. The sizes land on the 17-inch ends of 250–400 naked bikes. As Bridgestone’s own note says — “this is a rare size and delivery may take time” — availability is not good.
Sizes: F 110/70-17, 120/70-17, 110/80-18 / R 140/70-17
Where to buy
Bridgestone files it as an “on-road high-performance type” bias tire. One pairing only, 110/70-17 front and 130/70-17 rear, for 250-class nakeds. Bridgestone notes that “this is a rare size and delivery may take time.”
Sizes: F 110/70-17 / R 130/70-17
Where to buy
Michelin’s catalogue cites “excellent wet performance.” A current bias tire for smaller machines; we list 110/70-17 and 140/70-17 (150/60-17 is not offered in Japan). Source is Michelin’s official 2026 catalogue PDF.
Sizes: F 90/90-10, 100/90-10, 90/90-12, 120/70-12, 130/70-12, 80/90-14, 90/90-14, 70/90-17, 80/90-17, 90/80-17, 100/80-17, 70/90-14, 110/70-17 / R 90/90-10, 100/90-10, 90/90-12, 120/70-12, 130/70-12, 80/90-14, 90/90-14, 70/90-17, 80/90-17, 90/80-17, 100/80-17, 100/90-14, 130/70-17, 140/70-17
Where to buy
A touring tire. Metzeler’s English copy is “ride longer, ride further, ride safer.” It reaches from bias 110/70-17 and 140/70-17 all the way to cruiser sizes (130/90-16, 150/80-16). There is no Japanese page for it; confirmed on the English site.
Sizes: F 100/90-16, 110/90-16, 130/90-16, 100/80-17, 110/70-17, 110/80-17, 120/60ZR17, 120/70ZR17, 80/100-18, 100/90-18, 3.25-19, 90/90-19, 100/90-19 / R 130/90-16, 150/80-16, 130/70-17, 130/80-17, 140/70-17, 140/80-17, 150/70-17, 160/70ZR17, 180/55ZR17, 190/50ZR17, 190/55ZR17, 90/90-18, 110/90-18, 120/80-18, 4.00-18
Where to buy
Michelin calls it “the new tire for classic bikes, with safety improved further.” It has both 100/90B19 and 130/70B18, so it updates a GB350 or GB350C front and rear without changing the classic look. Tubeless in every size (Michelin notes it can also go on a WT rim with a tube fitted).
Sizes: F 100/80B17, 110/70B17, 110/80B17, 90/90B18, 100/90-18, 110/80B18, 110/90B18, 100/90B19, 3.25B19 / R 130/70B17, 130/80B17, 130/90B17, 140/80B17, 150/70B17, 150/70R17, 120/90B18, 130/70B18, 130/80B18, 4.00B18
Where to buy
Rear 150/60R17 options (17 total, 15 of them listed in the set section above)
Size 150/60-17: 17 exact, 0 in the same group. Shop links carry each tire’s own matching size.
Bridgestone’s line is “bringing US V-twins into a comfortable cruising space.” Aimed at cruisers, and Bridgestone states the rear’s wear life is substantially up on the previous product. It carries sizes other road tires do not — 120/70ZR18, 130/60B19, 130/90B16 among them.
Sizes: F 130/90B16, 100/80-17, 130/80B17, 140/75R17, 120/70ZR18, 130/70B18, 100/90B19, 120/70B19, 120/70ZR19, 130/60B19, 80/90-21, 130/60B21 / R 140/75R15, 130/90B16, 140/90B16, 150/80B16, 180/65B16, 180/70B16, 150/60ZR17, 160/70B17, 180/60B17, 200/55R17, 180/55B18, 240/40R18
Where to buy
A radial from the Harley OE Scorcher family. Custom sizes run deep here — 140/75R17, 240/40R18, 130/60B21 among them.
Sizes: F 100/80-17, 140/75R17, 120/70ZR18, 160/60R18, 120/70ZR19, 130/60B21 / R 140/75R15, 150/60ZR17, 150/70ZR17, 180/55ZR17, 200/55R17, 240/40R18
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.