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235/60R18 vs 235/65R18

235/65R18 is 0.9″ taller than 235/60R18 on average, going by the heights their makers list (29.1″ vs 30.0″). On paper the gap is 0.93″.

235/60R18 and 235/65R18 drawn to the same scale: 29.1 and 30.0 inches tall on average as listed235/60R1829.1″235/65R1830.0″+0.9″
Drawn to the same scale, using the average height the makers list for each size.

What changes

Going from 235/60R18 to 235/65R18.

Lift+0.46″
Width+0.00″
Speedometer3.3% slow

Lift is half the height difference, since the axle sits at the middle of the tire. The speedometer figure assumes it was set for 235/60R18 and uses the revolutions per mile the makers publish: at an indicated 60 mph you'd be doing 62.0 mph.

Side by side

235/60R18235/65R18Difference
Listed height ″29.00–29.1030.00–30.10+0.93
Size code height ″29.1030.03+0.93
Height under load ″28.229.1+0.9
Width ″9.259.25+0.00
Listed width ″9.4–9.59.3–9.5−0.0
Sidewall ″5.556.01+0.46
Wheel ″1818same
Weight lb27.1–45.128.7–35.3+1.1
Tread depth /32″9–159–13+0.1
Tires listed3525

All 29-inch tire sizes · All 30-inch tire sizes

Tires sold in both sizes

The same model in each size, by the heights the maker lists. Averages where a model comes in several load ranges.

Tire235/60R18 ″235/65R18 ″Taller byHeavier by
BFGoodrich Advantage Control29.0930.04+0.95″+0.2 lb
General AltiMAX Arctic X29.1030.00+0.90″+4.3 lb
General AltiMAX RT4529.1030.00+0.90″+1.5 lb
General AltiMAX365 AW29.1030.00+0.90″+1.8 lb
General Grabber H/T29.1030.00+0.90″−0.1 lb
Michelin CrossClimate229.1030.00+0.90″+0.7 lb
Michelin Defender229.0030.00+1.00″+0.9 lb
Michelin Latitude Tour HP29.1030.00+0.90″+1.5 lb
Michelin Pilot Sport 4 SUV29.1030.00+0.90″+1.8 lb
Michelin Primacy Tour A/S29.1030.00+0.90″+3.3 lb
Michelin X-Ice Snow29.0930.04+0.95″+2.6 lb
Toyo Celsius II29.0930.04+0.95″+1.7 lb
Toyo Extensa A/S II29.0930.04+0.95″+1.3 lb
Toyo OPEN COUNTRY Q/T29.0930.04+0.95″+2.0 lb
Toyo Observe G3-Ice29.0930.04+0.95″+0.7 lb
Toyo Open Country A/T III29.0930.04+0.95″+0.9 lb
Toyo Open Country H/T II29.0930.04+0.95″+0.8 lb
Toyo Proxes G-Tour29.1030.00+0.90″+2.9 lb
Toyo Proxes ST III29.0930.04+0.95″+4.2 lb

Questions about 235/60R18 vs 235/65R18

How much taller is 235/65R18 than 235/60R18?

0.93″ on average, going by the heights tire makers list: 235/60R18 tires are listed at 29.00–29.10″ and 235/65R18 at 30.00–30.10″. The size codes work out to 29.10″ and 30.03″, a 0.93″ difference.

How much lift does 235/65R18 give over 235/60R18?

The tire's radius grows by 0.46″, so the axle sits about 0.46″ higher, and the top of the tread comes 0.46″ closer to the fender. Both are the same width on paper. Whether it fits depends on your vehicle, lift and wheel offset.

Will my speedometer be off with 235/65R18 instead of 235/60R18?

Yes. If it's set for 235/60R18, it will read about 3.3% slow: at an indicated 60 mph you'll be doing 62.0 mph. Worked out from the revolutions per mile the makers publish.

Can 235/65R18 go on the same wheel as 235/60R18?

Both fit a 18-inch wheel. Wheel widths approved for both run from 6.5″ to 8.5″.