285/65R20 vs 295/65R20

295/65R20 is 0.5" taller than 285/65R20 (1.5%)

Diameter difference+1.48%diameter 34.59" → 35.10"
285/65R20295/65R20
285/65R20295/65R20Difference
Overall diameter34.59"35.10"+0.51"
Section width11.22"11.61"+0.39"
Sidewall height7.29"7.55"+0.26"
Circumference108.7"110.3"+1.6"
Revolutions per mile583575−9
Wheel diameter20"20"±0"

Speedometer

ShowsActualDiff
30 mph30.4 mph+0.4
45 mph45.7 mph+0.7
60 mph60.9 mph+0.9
70 mph71.0 mph+1.0
80 mph81.2 mph+1.2

Gear ratio to match

CurrentEquivalent
3.423.47
3.553.60
3.733.79
4.104.16

295/65R20 is 0.51" taller than 285/65R20, a +1.48% change in diameter, inside the 3% range most shops treat as a safe swap.

Ground clearance changes by 0.26" (half the diameter change), and the tire needs 0.26" more room above it.

295/65R20 is 0.39" wider. On the same wheel offset about half of that, 0.20", moves toward the suspension and half toward the fender.

Both fit a 20" wheel; the sidewall is 0.26" taller on 295/65R20.

Details: 285/65R20 in inches · 295/65R20 in inches · change sizes in the calculator

FAQ

What is the difference between 285/65R20 and 295/65R20?

295/65R20 is 0.51" taller (+1.48%) and 0.39" wider than 285/65R20.

Will 295/65R20 change my speedometer?

Yes, by +1.48%. When the speedometer shows 60 mph you would be going 60.9 mph.

Can I replace 285/65R20 with 295/65R20?

Often yes: the diameter change of +1.5% is within the common 3% guideline. Check the load index, speed rating and clearance.