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Sidewall

195/70R15

195 mm across the tread, a sidewall 70% of that — 137 mm — on a 15-inch rim. That puts the whole wheel at 25.7 inches tall.

137 mm sidewall654 mm · 25.7"
Sidewall
5.37"
137 mm
Overall
25.7"
654.0 mm
Circumference
80.9"
2.055 m
Revs per mile
783
per minute at 60 mph

What it needs to sit on

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It mounts on a rim between 5.5" and 7" wide, and the tread follows the rim: roughly 5 mm of section width for every half-inch, so about 188 mm across at the narrow end and 203 mm at the wide one. Written the way lift kits and wheel wells are, it is a 25.7×7.7R15 — tall by wide, in inches.

What goes wrong on this size

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

2 of them name what let go, and it is most often blister. Goodyear is named more than any other brand.

What let goComplaints
blister1
out of round1

Where the wheel is named, 1 of 2 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
185/75R1525.9" +0.7 %+2.3 mm60.4 mphside by side
205/65R1525.5" -1.0 %-3.3 mm59.4 mphside by side
215/65R1526.0" +1.0 %+3.3 mm60.6 mphside by side
175/80R1526.0" +1.1 %+3.5 mm60.6 mphside by side
175/75R1525.3" -1.6 %-5.3 mm59.0 mphside by side
185/70R1525.2" -2.1 %-7.0 mm58.7 mphside by side
205/70R1526.3" +2.1 %+7.0 mm61.3 mphside by side
215/60R1525.2" -2.3 %-7.5 mm58.6 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.


165/75R16124 mm sidewall — 9% less
225/55R16124 mm sidewall — 9% less
175/85R14149 mm sidewall — 9% more
205/60R16123 mm sidewall — 10% less
185/80R14148 mm sidewall — 8% more
215/70R14151 mm sidewall — 10% more

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
185/75R1530.2 mph50.3 mph70.5 mph10,069
205/65R1529.7 mph49.5 mph69.3 mph9,901
215/65R1530.3 mph50.5 mph70.7 mph10,099
175/80R1530.3 mph50.5 mph70.7 mph10,107
175/75R1529.5 mph49.2 mph68.9 mph9,839