265/70R17 vs 275/70R17
275/70R17 is 1.7% taller (+0.55 in) and 0.39 in wider than 265/70R17.
275/70R17 is 1.7% taller than 265/70R17. That is inside the ±3% most shops treat as a straight swap.
Real speed on 275/70R17.
Change in height under the axle.
On the same wheel, split inboard and outboard.
Shop 275/70R17 tires
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265/70R17 or 275/70R17?
Can I use 275/70R17 instead of 265/70R17?
275/70R17 is 1.7% taller than 265/70R17. 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 275/70R17 you are really doing 61.0 mph if the speedometer was set up for 265/70R17. Going the other way, 265/70R17 would make it read 59.0 mph at a real 60.
How much ground clearance does it change?
Half the diameter difference: +0.28 in (+7 mm) under the axle.