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265/35R21 vs 265/35R22

265/35R22 is taller than 265/35R21 by 3.53% — a diameter difference of 1.00″.

What changes between 265/35R21 and 265/35R22

Switching from 265/35R21 to 265/35R22 changes overall diameter by +3.53%, a taller tire by 1.00 inches. This sits in the 3–5% caution band, where rubbing at full steering lock or suspension compression becomes possible. Leveling kits or fender-liner trims are often needed on lifted trucks. Section width moves by 0.00″ (265mm → 265mm), which affects contact patch and fender-well clearance. Sidewall height shifts by 0.00″: sidewall height is unchanged. Revs per mile moves by -25, which translates directly to speedometer error — at an indicated 65 mph, actual speed becomes 67.3 mph. The swap also changes rim diameter from 21″ to 22″, meaning new wheels are required. Wheel cost typically dominates the total upsize budget.

Spec 265/35R21 265/35R22
Overall diameter 28.3″ 29.3″
Section width 10.43″ (265 mm) 10.43″ (265 mm)
Sidewall height 3.65″ (35%) 3.65″ (35%)
Rim diameter 21″ 22″
Circumference 88.92″ 92.06″
Revs per mile 713 688

Interactive comparison

Type to search · try 275/65R18 or "33" for inch aliases
Common upsizes from 265/35R21:
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265/35R21

Diameter
28.3″ / 718.9mm
Section Width
10.43
Sidewall
3.65″ / 92.75mm
Circumference
88.92
Revs/Mile
713
See tires in 265/35R21

265/35R22

Diameter
29.3″ / 744.3mm
Section Width
10.43
Sidewall
3.65″ / 92.75mm
Circumference
92.06
Revs/Mile
688
See tires in 265/35R22
265/35R21 · 28.3265/35R22 · 29.3

Speedometer & Diameter Impact

Different rim — new wheels required
Diameter Change
+3.53%
Sidewall Change
0.00″
Revs/Mile Δ
-25
mph

At an indicated 60 mph, your actual speed is 62.12 mph (99.97 km/h). Your speedometer reads 3.53% low versus actual speed.

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