32-inch tires on 18-inch wheels
For a 32-inch-tall tire on a 18-inch wheel, look at 255/70R18 (32.1 in), 275/65R18 (32.1 in), 305/60R18 (32.4 in), 265/65R18 (31.6 in) and 245/70R18 (31.5 in). These are the sizes in the maker data books within ±0.5 in of 32 in on 18-inch wheels. A 18-inch wheel leaves a 7.0 in sidewall on a 32-inch tire.
| Size | Calculated | Width | Published by makers |
|---|---|---|---|
| 245/70R18 | 31.5 in | 9.6 in | 31.4 in |
| 255/70R18 | 32.1 in | 10.0 in | 32–32.17 in |
| 265/65R18 | 31.6 in | 10.4 in | 31.4–31.77 in |
| 275/65R18 | 32.1 in | 10.8 in | 32–32.4 in |
| 305/60R18 | 32.4 in | 12.0 in | 32.4 in |
Other codes with about the same diameter
Standard metric codes within ±0.5 in that we did not find in the data books we use (they may exist from other makers, or not at all): 355/50R18 (32.0 in), 295/60R18 (31.9 in), 325/55R18 (32.1 in), 235/75R18 (31.9 in), 225/80R18 (32.2 in), 205/85R18 (31.7 in), 315/55R18 (31.6 in), 215/85R18 (32.4 in), 345/50R18 (31.6 in), 215/80R18 (31.5 in).
Compare with your current size
Set up for: going bigger: 32-inch tires on 18-inch wheels · Different situation?
Your current size
e.g. 265/70R17, 2657017 or 33x12.50R20
Where do I find my size?
It's on the tire sidewall, e.g. P265/70R17 115T, and on the tire placard sticker on the driver's door jamb (also in the owner's manual). The placard shows the size the vehicle came with; the sidewall shows what is fitted now. If they differ, use the placard as your starting point. Digits are enough here: 2657017 or 33125020.
Size you're considering
Other wheel sizes:
FAQ
What metric size is a 32 inch tire on a 18 inch rim?
For a 32-inch-tall tire on a 18-inch wheel, look at 255/70R18 (32.1 in), 275/65R18 (32.1 in), 305/60R18 (32.4 in), 265/65R18 (31.6 in) and 245/70R18 (31.5 in). These are the sizes in the maker data books within ±0.5 in of 32 in on 18-inch wheels. A 18-inch wheel leaves a 7.0 in sidewall on a 32-inch tire.