Tire Size Box

275/25R24 vs 275/35R24

275/35R24 compared with 275/25R24

+7.4% diameter, 0.0" width

275/35R24 is 31.58" tall vs 29.41". More than the 3% rule of thumb, so check carefully before switching.

29.4"24" rim2.7"10.8" wide
275/25R24 (solid) compared with 275/35R24 (dashed outline), drawn to scale

With 275/35R24 tires, when your speedometer says 60 mph you are really going

64.4 mph

275/35R24 is +2.17 inches (+7.4%) in overall diameter. That is more than the 3% most shops and makers recommend.

275/25R24275/35R24Difference%
Overall diameter29.41"31.58"+2.17"+7.4%
Section width10.83"10.83"0.00"0.0%
Sidewall height2.71"3.79"+1.08"+40.0%
Circumference92.40"99.21"+6.80"+7.4%
Revolutions per mile685.7638.7−47.0−6.9%

Speedometer difference

If your vehicle came with 275/25R24 and you fit 275/35R24, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph21.5 mph+1.5 mph
30 mph32.2 mph+2.2 mph
40 mph42.9 mph+2.9 mph
50 mph53.7 mph+3.7 mph
60 mph64.4 mph+4.4 mph
65 mph69.8 mph+4.8 mph
70 mph75.2 mph+5.2 mph
75 mph80.5 mph+5.5 mph
80 mph85.9 mph+5.9 mph

Each size on its own

Questions

Which is bigger, 275/25R24 or 275/35R24?
275/35R24 is taller by 2.17 inches (31.58" vs 29.41"). 275/25R24 is the same width.
Can I replace 275/25R24 with 275/35R24?
It is not recommended without checking carefully. The diameter difference is +7.4%, more than the 3% most shops and makers allow. It will throw off the speedometer and may affect ABS, stability control and clearance.
How much will 275/35R24 change my speedometer?
When your speedometer reads 60 mph with 275/35R24 fitted (calibrated for 275/25R24), your real speed is 64.4 mph. Your odometer will under-count miles by about 7.4%.
Will 275/35R24 lift my vehicle?
Ride height changes by half the diameter difference: +1.08 inches of ground clearance at the axle.

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