SidewallerTire & wheel calculators

265/35R20 vs 235/45R19

235/45R19 is 0.1% taller (+0.02 in) and 1.18 in narrower than 265/35R20.

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Close match

235/45R19 is 0.1% taller than 265/35R20. That is inside the ±3% most shops treat as a straight swap.

265/35R20235/45R19Change
Diameter27.30″27.33″+0.02″+0.1%
Width10.43″9.25″−1.18″−11.3%
Sidewall3.65″4.16″+0.51″+14.0%
Circumference85.8″85.8″+0.1″+0.1%
Wheel20″19″−1″
Revs per mile739738−1
SideTread
265/35R20235/45R19
Speedometer shows 60 mph60.1mph

Real speed on 235/45R19.

Ground clearance+0.01in

Change in height under the axle.

Width per side−0.59in

On the same wheel, split inboard and outboard.

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265/35R20 or 235/45R19?

Can I use 235/45R19 instead of 265/35R20?

235/45R19 is 0.1% taller than 265/35R20. That is inside the ±3% most shops treat as a straight swap. Also match or beat the original load index and speed rating, and check that the wheel width suits the new tire.

Will my speedometer be off?

At an indicated 60 mph on 235/45R19 you are really doing 60.1 mph if the speedometer was set up for 265/35R20. Going the other way, 265/35R20 would make it read 59.9 mph at a real 60.

How much ground clearance does it change?

Half the diameter difference: +0.01 in (+0 mm) under the axle.

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