SidewallerTire & wheel calculators

245/45R19 vs 235/50R19

235/50R19 is 2.1% taller (+0.57 in) and 0.39 in narrower than 245/45R19.

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Close match

235/50R19 is 2.1% taller than 245/45R19. That is inside the ±3% most shops treat as a straight swap.

245/45R19235/50R19Change
Diameter27.68″28.25″+0.57″+2.1%
Width9.65″9.25″−0.39″−4.1%
Sidewall4.34″4.63″+0.29″+6.6%
Circumference87.0″88.8″+1.8″+2.1%
Wheel19″19″Same
Revs per mile729714−15
SideTread
245/45R19235/50R19
Speedometer shows 60 mph61.2mph

Real speed on 235/50R19.

Ground clearance+0.29in

Change in height under the axle.

Width per side−0.20in

On the same wheel, split inboard and outboard.

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245/45R19 or 235/50R19?

Can I use 235/50R19 instead of 245/45R19?

235/50R19 is 2.1% taller than 245/45R19. 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 235/50R19 you are really doing 61.2 mph if the speedometer was set up for 245/45R19. Going the other way, 245/45R19 would make it read 58.8 mph at a real 60.

How much ground clearance does it change?

Half the diameter difference: +0.29 in (+7 mm) under the axle.

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