SidewallerTire & wheel calculators

265/60R18 vs 265/70R16

265/70R16 is 0.3% taller (+0.09 in) and the same width than 265/60R18.

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265/70R16 is 0.3% taller than 265/60R18. That is inside the ±3% most shops treat as a straight swap.

265/60R18265/70R16Change
Diameter30.52″30.61″+0.09″+0.3%
Width10.43″10.43″0.00″0.0%
Sidewall6.26″7.30″+1.04″+16.7%
Circumference95.9″96.2″+0.3″+0.3%
Wheel18″16″−2″
Revs per mile661659−2
SideTread
265/60R18265/70R16
Speedometer shows 60 mph60.2mph

Real speed on 265/70R16.

Ground clearance+0.04in

Change in height under the axle.

Width per side0.00in

On the same wheel, split inboard and outboard.

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265/60R18 or 265/70R16?

Can I use 265/70R16 instead of 265/60R18?

265/70R16 is 0.3% taller than 265/60R18. 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 265/70R16 you are really doing 60.2 mph if the speedometer was set up for 265/60R18. Going the other way, 265/60R18 would make it read 59.8 mph at a real 60.

How much ground clearance does it change?

Half the diameter difference: +0.04 in (+1 mm) under the axle.

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