Skip to content
Sidewall

325/60R20

325 mm across the tread, a sidewall 60% of that — 195 mm — on a 20-inch rim. That puts the whole wheel at 35.4 inches tall.

195 mm sidewall898 mm · 35.4"
Sidewall
7.68"
195 mm
Overall
35.4"
898.0 mm
Circumference
111.1"
2.821 m
Revs per mile
570
per minute at 60 mph

What it needs to sit on

i

It mounts on a rim between 9" and 12" wide, and the tread follows the rim: roughly 5 mm of section width for every half-inch, so about 310 mm across at the narrow end and 340 mm at the wide one. Written the way lift kits and wheel wells are, it is a 35.4×12.8R20 — tall by wide, in inches.

What goes wrong on this size

i

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

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

What let goComplaints
road hazard1
blowout1

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

What fits instead

i

Same 20-inch rim, height within 3%. Past that the speedometer starts lying and things begin to rub.


SizeHeightRide heightSpeedo reads 60, you doCompare
305/65R2035.6" +0.7 %+3.3 mm60.4 mphside by side
345/55R2034.9" -1.2 %-5.3 mm59.3 mphside by side
315/60R2034.9" -1.3 %-6.0 mm59.2 mphside by side
335/60R2035.8" +1.3 %+6.0 mm60.8 mphside by side
315/65R2036.1" +2.2 %+9.8 mm61.3 mphside by side
335/55R2034.5" -2.4 %-10.8 mm58.6 mphside by side
305/60R2034.4" -2.7 %-12.0 mm58.4 mphside by side
345/60R2036.3" +2.7 %+12.0 mm61.6 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.


305/60R21183 mm sidewall — 6% less
345/60R19207 mm sidewall — 6% more
295/70R19207 mm sidewall — 6% more
335/55R21184 mm sidewall — 6% less
315/65R19205 mm sidewall — 5% more
325/65R19211 mm sidewall — 8% 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
305/65R2030.2 mph50.4 mph70.5 mph10,072
345/55R2029.6 mph49.4 mph69.2 mph9,883
315/60R2029.6 mph49.3 mph69.1 mph9,866
335/60R2030.4 mph50.7 mph70.9 mph10,134
315/65R2030.7 mph51.1 mph71.5 mph10,217