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Sidewall

265/65R18

265 mm across the tread, a sidewall 65% of that — 172 mm — on a 18-inch rim. That puts the whole wheel at 31.6 inches tall.

172 mm sidewall802 mm · 31.6"
Sidewall
6.78"
172 mm
Overall
31.6"
801.7 mm
Circumference
99.2"
2.519 m
Revs per mile
639
per minute at 60 mph

What it needs to sit on

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It mounts on a rim between 7.5" and 9.5" wide, and the tread follows the rim: roughly 5 mm of section width for every half-inch, so about 255 mm across at the narrow end and 275 mm at the wide one. Written the way lift kits and wheel wells are, it is a 31.6×10.4R18 — tall by wide, in inches.

What goes wrong on this size

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

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

What let goComplaints
blowout1
out of round1
crack1
not stated1

Where the wheel is named, 2 of 3 were on the front — the end that steers.

What fits instead

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Same 18-inch rim, height within 3%. Past that the speedometer starts lying and things begin to rub.


SizeHeightRide heightSpeedo reads 60, you doCompare
245/70R1831.5" -0.2 %-0.8 mm59.9 mphside by side
285/60R1831.5" -0.3 %-1.3 mm59.8 mphside by side
255/70R1832.1" +1.6 %+6.3 mm60.9 mphside by side
255/65R1831.1" -1.6 %-6.5 mm59.0 mphside by side
275/65R1832.1" +1.6 %+6.5 mm61.0 mphside by side
275/60R1831.0" -1.8 %-7.3 mm58.9 mphside by side
245/75R1832.5" +2.9 %+11.5 mm61.7 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.


285/65R17185 mm sidewall — 8% more
245/65R19159 mm sidewall — 8% less
265/70R17186 mm sidewall — 8% more
265/60R19159 mm sidewall — 8% less
245/75R17184 mm sidewall — 7% more
295/55R19162 mm sidewall — 6% less

Tires graded in this size

Longest-lasting tread first. The grade is set by the maker and checked by regulators.


TireTreadwearWet grip
Bridgestone Alenza AS Ultra800A
BLACKHAWK HISCEND-H HT01700A
Bridgestone Alenza Prestige700A
Bridgestone Ultraweather600A
Hankook Dynapro HP2580A
MICHELIN Primacy LTX540B
Multi-Mile Performer Sport CXV Sport500A
National Wild Spirit Sport HXT500A
Tred Tech Crusade SXT500A

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
245/70R1829.9 mph49.9 mph69.9 mph9,981
285/60R1829.9 mph49.8 mph69.8 mph9,969
255/70R1830.5 mph50.8 mph71.1 mph10,156
255/65R1829.5 mph49.2 mph68.9 mph9,838
275/65R1830.5 mph50.8 mph71.1 mph10,162