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Sidewall

255/75R15

255 mm across the tread, a sidewall 75% of that — 191 mm — on a 15-inch rim. That puts the whole wheel at 30.1 inches tall.

191 mm sidewall764 mm · 30.1"
Sidewall
7.53"
191 mm
Overall
30.1"
763.5 mm
Circumference
94.4"
2.399 m
Revs per mile
671
per minute at 60 mph

What it needs to sit on

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It mounts on a rim between 7" and 9.5" wide, and the tread follows the rim: roughly 5 mm of section width for every half-inch, so about 243 mm across at the narrow end and 268 mm at the wide one. Written the way lift kits and wheel wells are, it is a 30.1×10.0R15 — tall by wide, in inches.

What goes wrong on this size

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1 drivers have filed a complaint. 0 of them ended in a crash, and nobody was hurt. Nobody died.

1 of them name what let go, and it is most often blowout. Michelin is named more than any other brand.

What let goComplaints
blowout1

Where the wheel is named, 1 of 1 were on the front — the end that steers.

What fits instead

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Same 15-inch rim, height within 3%. Past that the speedometer starts lying and things begin to rub.


SizeHeightRide heightSpeedo reads 60, you doCompare
275/70R1530.2" +0.3 %+1.3 mm60.2 mphside by side
235/80R1529.8" -0.9 %-3.3 mm59.5 mphside by side
245/80R1530.4" +1.2 %+4.8 mm60.7 mphside by side
265/70R1529.6" -1.5 %-5.8 mm59.1 mphside by side
245/75R1529.5" -2.0 %-7.5 mm58.8 mphside by side
265/75R1530.6" +2.0 %+7.5 mm61.2 mphside by side
235/85R1530.7" +2.2 %+8.5 mm61.3 mphside by side

Same height, different rim

Bigger rim, same overall height. Sharper steering, harsher ride, and far less rubber between your wheel and the next pothole.


255/70R16179 mm sidewall — 7% less
275/65R16179 mm sidewall — 7% less
225/80R16180 mm sidewall — 6% less
235/75R16176 mm sidewall — 8% less
235/85R14200 mm sidewall — 4% more
245/75R16184 mm sidewall — 4% less

If you fit something taller

A taller tire covers more ground per turn, so the needle reads low and the odometer counts short. Over ten thousand miles on the dial, the last column is what you really drove.


Fitted insteadReads 30Reads 50Reads 70Real miles per 10,000 shown
275/70R1530.1 mph50.2 mph70.2 mph10,033
235/80R1529.7 mph49.6 mph69.4 mph9,915
245/80R1530.4 mph50.6 mph70.9 mph10,124
265/70R1529.5 mph49.2 mph68.9 mph9,849
245/75R1529.4 mph49.0 mph68.6 mph9,804