37-inch tires on 20-inch wheels
For a 37-inch-tall tire on a 20-inch wheel, look at 37x11.50R20, 37x12.50R20 and 37x13.50R20. These are the sizes in the maker data books within ±0.5 in of 37 in on 20-inch wheels. A 20-inch wheel leaves a 8.5 in sidewall on a 37-inch tire.
| Size | Calculated | Width | Published by makers |
|---|---|---|---|
| 37x11.50R20 | 37.0 in | 11.5 in | 36.54–36.8 in |
| 37x12.50R20 | 37.0 in | 12.5 in | 36.5–37 in |
| 37x13.50R20 | 37.0 in | 13.5 in | 36.5–37.05 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): 255/85R20 (37.1 in), 335/65R20 (37.1 in), 285/75R20 (36.8 in), 305/70R20 (36.8 in), 355/60R20 (36.8 in), 265/80R20 (36.7 in), 275/80R20 (37.3 in), 315/70R20 (37.4 in), 325/65R20 (36.6 in), 295/75R20 (37.4 in).
Compare with your current size
Set up for: going bigger: 37-inch tires on 20-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 37 inch tire on a 20 inch rim?
For a 37-inch-tall tire on a 20-inch wheel, look at 37x11.50R20, 37x12.50R20 and 37x13.50R20. These are the sizes in the maker data books within ±0.5 in of 37 in on 20-inch wheels. A 20-inch wheel leaves a 8.5 in sidewall on a 37-inch tire.