Tire RulerWhat changes when you switch to 295/60R20
- Height: +0.73″ (+2.2%), so ground clearance at the axle goes up 0.36″.
- Width: −0.39″ (-10 mm). Check inner clearance to the suspension and frame, and the fender liner at full lock.
- Sidewall: +0.36″. A taller sidewall rides a bit softer and protects the wheel off-road.
- Revolutions per mile: 607 → 594. Your gears act about 2.2% taller; at 65 mph in a 0.69 top gear with 3.73s, that’s 1,693 → 1,657 RPM.
Sizes are theoretical, from the sidewall code. The same size can differ by a few tenths of an inch between brands and tread patterns; check the maker’s spec sheet for the exact model.
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Frequently asked questions
How much bigger is 295/60R20 than 305/55R20?
295/60R20 is 0.73 inches (2.2%) taller and 0.39 inches narrower: 33.9" × 11.6" versus 33.2" × 12.0".
Will 295/60R20 change my speedometer?
Yes, by 2.2%. Going from 305/55R20 to 295/60R20, an indicated 60 mph is about 61.3 mph.
Can I replace 305/55R20 with 295/60R20?
Often, yes: the height difference is within the ±3% most tire shops accept. Both fit a 20" wheel; confirm the rim width, load index and clearance for your vehicle.
Do I need to regear going from 305/55R20 to 295/60R20?
Usually not for a 2.2% change. With 3.73 gears, the 295/60R20 acts like 3.65.