265/35R20 tire size

A 265/35R20 tire is 27.30 inches (693.5 mm) tall, 10.43 in (265 mm) wide and fits a 20-inch wheel. In inch notation it is roughly a 27.3x10.4R20.

265/35R20 dimensions
Overall diameter27.30 in693.5 mm
Section width10.43 in265 mm
Sidewall height3.65 in92.8 mm
Circumference85.78 in2,179 mm
Revolutions738.7 per mile459.0 per km
Rim diameter20 in508.0 mm

Compare 265/35R20 with another size

Speed in

Overall diameter difference

+0.36%

60 mph on the speedometer = 60.2 mph actual

Within the ±3 % diameter range most tire fitters accept.

Ground clearance
+1.3 mm (+0.05 in)
Revolutions
739 → 736 per mile

265/35R20 235/40R20

Side-by-side dimensions

CurrentNewDifference%
Diameter27.30 in27.40 in+0.10 in+0.36%
Diameter693.5 mm696.0 mm+2.5 mm+0.36%
Width10.43 in9.25 in−1.18 in−11.32%
Width265.0 mm235.0 mm−30.0 mm−11.32%
Sidewall3.65 in3.70 in+0.05 in+1.35%
Sidewall92.8 mm94.0 mm+1.3 mm+1.35%
Circumference85.78 in86.08 in+0.31 in+0.36%
Revs per mile738.7 736.0 −2.7 −0.36%

Speedometer error

Speedometer showsActual speedDifference
20 mph20.1 mph+0.1 mph
30 mph30.1 mph+0.1 mph
40 mph40.1 mph+0.1 mph
50 mph50.2 mph+0.2 mph
60 mph60.2 mph+0.2 mph
70 mph70.3 mph+0.3 mph
80 mph80.3 mph+0.3 mph

Alternative sizes on the same 20-inch wheel

Sizes in use within ±3 % of the overall diameter of 265/35R20:

Plus and minus sizes for 265/35R20

SizeWheelDiameterDifference
235/50R18Minus 2 (18 in)27.25 in−0.19%
265/45R18Minus 2 (18 in)27.39 in+0.32%
255/45R18Minus 2 (18 in)27.04 in−0.98%
285/40R18Minus 2 (18 in)26.98 in−1.20%
235/45R19Minus 1 (19 in)27.33 in+0.09%
265/40R19Minus 1 (19 in)27.35 in+0.16%
305/35R19Minus 1 (19 in)27.41 in+0.37%
295/35R19Minus 1 (19 in)27.13 in−0.63%
265/30R21Plus 1 (21 in)27.26 in−0.16%
275/30R21Plus 1 (21 in)27.50 in+0.71%
285/30R21Plus 1 (21 in)27.73 in+1.57%
245/35R21Plus 1 (21 in)27.75 in+1.64%

Vehicles approved with 265/35R20 tires

Models whose Swiss type approval lists 265/35R20 as a standard or optional size (313 approvals in total). Always check your own vehicle's placard or papers.

Source: Swiss Federal Roads Office (FEDRO/ASTRA), open government data. Original data (downloaded 2026-09-29). Data processed by us; errors in processing are ours, not the publisher's.

Nearby 20-inch sizes

Reading the 265/35R20 size

The load index and speed rating (for example 91V) follow the size on the sidewall. They must meet at least the values on your vehicle's tire placard.