SidewallerTire & wheel calculators

255/70R18 vs 295/70R18

295/70R18 is 6.9% taller (+2.20 in) and 1.57 in wider than 255/70R18.

Large
Big change

295/70R18 is 6.9% taller than 255/70R18. Beyond 5% you usually need a lift or leveling kit, a speedometer recalibration and sometimes new gears.

255/70R18295/70R18Change
Diameter32.06″34.26″+2.20″+6.9%
Width10.04″11.61″+1.57″+15.7%
Sidewall7.03″8.13″+1.10″+15.7%
Circumference100.7″107.6″+6.9″+6.9%
Wheel18″18″Same
Revs per mile629589−40
SideTread
255/70R18295/70R18
Speedometer shows 60 mph64.1mph

Real speed on 295/70R18.

Ground clearance+1.10in

Change in height under the axle.

Width per side+0.79in

On the same wheel, split inboard and outboard.

Shop 295/70R18 tires

Opens the store’s own search

Prices and stock change often, so check a few stores. We don’t earn anything from these links.

255/70R18 or 295/70R18?

Can I use 295/70R18 instead of 255/70R18?

295/70R18 is 6.9% taller than 255/70R18. Beyond 5% you usually need a lift or leveling kit, a speedometer recalibration and sometimes new gears. 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 295/70R18 you are really doing 64.1 mph if the speedometer was set up for 255/70R18. Going the other way, 255/70R18 would make it read 56.1 mph at a real 60.

How much ground clearance does it change?

Half the diameter difference: +1.10 in (+28 mm) under the axle.

Other comparisons