IRC NF30s: sizes and matching bikes
Type: Trail ／ Street legal
About this tire
A front tire whose OE fitment list on IRC's site includes the Cross Cub 50 and the Super Cub PRO family. 70/100-14 — exactly the Cross Cub 50's front size. WT and TL versions exist.
Across the six axes, Pavement・Life sits at 4 and Sand・Mud・Rocks at 1. A tire set up to be good at some things and to give up others. Of the 18 tires in the Trail group, 9 carry 4 for Pavement. One size, 14-inch.
Our rating (1–5)
| Sand | 1 / 5 |
|---|---|
| Mud | 1 / 5 |
| Rocks | 1 / 5 |
| Hard-pack | 2 / 5 |
| Pavement | 4 / 5 |
| Life | 4 / 5 |
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.
Size lineup
Front
- 70/100-14
Bikes whose OE sizes it fits
Of the 260 bikes on file, this tire’s size lineup fits the OE sizes of 2. Each link opens the tires you can pick for that bike.
| Model | Years | Front | Rear |
|---|---|---|---|
| Kawasaki KLX110R L | 2027 model | 2.50-14 | 3.00-12 |
| Honda Cross Cub 50 | to 2022, discontinued | 70/100-14 | 80/100-14 |
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.