SidewallerTire & wheel calculators

245/35R19 vs 255/35R19

255/35R19 is 1.1% taller (+0.28 in) and 0.39 in wider than 245/35R19.

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Close match

255/35R19 is 1.1% taller than 245/35R19. That is inside the ±3% most shops treat as a straight swap.

245/35R19255/35R19Change
Diameter25.75″26.03″+0.28″+1.1%
Width9.65″10.04″+0.39″+4.1%
Sidewall3.38″3.51″+0.14″+4.1%
Circumference80.9″81.8″+0.9″+1.1%
Wheel19″19″Same
Revs per mile783775−8
SideTread
245/35R19255/35R19
Speedometer shows 60 mph60.6mph

Real speed on 255/35R19.

Ground clearance+0.14in

Change in height under the axle.

Width per side+0.20in

On the same wheel, split inboard and outboard.

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245/35R19 or 255/35R19?

Can I use 255/35R19 instead of 245/35R19?

255/35R19 is 1.1% taller than 245/35R19. 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 255/35R19 you are really doing 60.6 mph if the speedometer was set up for 245/35R19. Going the other way, 245/35R19 would make it read 59.4 mph at a real 60.

How much ground clearance does it change?

Half the diameter difference: +0.14 in (+4 mm) under the axle.

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