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295/30R20 tire size

295/30R20 is a metric size: 27.0" tall, 11.6" wide, on a 20" rim — about a 27x11.50R20. The sidewall is 3.5" and the tire turns 748 times per mile.

Diameter 27.0" sidewall 3.48" 20" rim width 295 mm (11.6")
295/30R20: 295 mm wide, sidewall 30% of the width (3.48"), on a 20" rim → 26.97" tall.

295/30R20 specs

Overall diameter (height)26.97" · 685 mm
Section width11.61" · 295 mm
Sidewall height3.48" · 89 mm (30% of width)
Rim diameter20"
Circumference84.72" · 2.152 m
Revolutions per mile748 (465 per km)
Inch (flotation) equivalent27x11.50R20

Equivalent sizes on a 20" rim

Sizes within ±5% of the overall diameter. Green rows are inside the usual ±3% limit for keeping the speedometer, ABS and gearing right; red rows are bigger changes that need clearance checks.

SizeDiameterDifferenceWidthSpeedo at 60
245/40R20 common27.72"+2.77%-50 mm61.7 mphcompare →
245/35R20 common26.75"-0.80%-50 mm59.5 mphcompare →
255/35R20 common27.03"+0.22%-40 mm60.1 mphcompare →
275/35R20 common27.58"+2.26%-20 mm61.4 mphcompare →
255/40R20 common28.03"+3.94%-40 mm62.4 mphcompare →
285/35R20 common27.85"+3.28%-10 mm62.0 mphcompare →
285/30R20 common26.73"-0.88%-10 mm59.5 mphcompare →
275/30R20 common26.50"-1.75%-20 mm58.9 mphcompare →
265/35R20 common27.30"+1.24%-30 mm60.7 mphcompare →
235/35R2026.48"-1.82%-60 mm58.9 mphcompare →
305/30R2027.20"+0.88%+10 mm60.5 mphcompare →
295/35R2028.13"+4.31%0 mm62.6 mphcompare →
245/30R2025.79"-4.38%-50 mm57.4 mphcompare →
265/30R2026.26"-2.63%-30 mm58.4 mphcompare →
255/30R2026.02"-3.50%-40 mm57.9 mphcompare →
225/35R2026.20"-2.85%-70 mm58.3 mphcompare →
335/25R2026.59"-1.39%+40 mm59.2 mphcompare →
315/30R2027.44"+1.75%+20 mm61.1 mphcompare →
305/25R2026.00"-3.58%+10 mm57.9 mphcompare →
235/40R2027.40"+1.61%-60 mm61.0 mphcalculate →
335/30R2027.91"+3.50%+40 mm62.1 mphcalculate →
295/25R2025.81"-4.31%0 mm57.4 mphcalculate →
325/25R2026.40"-2.12%+30 mm58.7 mphcalculate →
325/30R2027.68"+2.63%+30 mm61.6 mphcalculate →
345/30R2028.15"+4.38%+50 mm62.6 mphcalculate →
215/45R2027.62"+2.41%-80 mm61.4 mphcalculate →
345/25R2026.79"-0.66%+50 mm59.6 mphcalculate →
225/40R2027.09"+0.44%-70 mm60.3 mphcalculate →
195/50R2027.68"+2.63%-100 mm61.6 mphcalculate →
145/60R2026.85"-0.44%-150 mm59.7 mphcalculate →
155/60R2027.32"+1.31%-140 mm60.8 mphcalculate →
145/65R2027.42"+1.68%-150 mm61.0 mphcalculate →
175/55R2027.58"+2.26%-120 mm61.4 mphcalculate →
315/25R2026.20"-2.85%+20 mm58.3 mphcalculate →
165/60R2027.80"+3.07%-130 mm61.8 mphcalculate →
155/65R2027.93"+3.58%-140 mm62.1 mphcalculate →
225/45R2027.97"+3.72%-70 mm62.2 mphcalculate →

Plus / minus sizing: 19" and 21" rims

Same overall height on a different rim. Check wheel width and clearance before switching.

SizeDiameterDifferenceWidthSpeedo at 60
245/40R19 common26.72"-0.93%-50 mm59.4 mphcompare →
255/40R19 common27.03"+0.23%-40 mm60.1 mphcompare →
225/45R19 common26.97"+0.01%-70 mm60.0 mphcompare →
285/35R19 common26.85"-0.42%-10 mm59.7 mphcompare →
295/35R1927.13"+0.60%0 mm60.4 mphcompare →
345/30R1927.15"+0.67%+50 mm60.4 mphcompare →
255/30R2127.02"+0.20%-40 mm60.1 mphcalculate →
295/25R2126.81"-0.60%0 mm59.6 mphcalculate →
305/25R2127.00"+0.13%+10 mm60.1 mphcalculate →
245/30R2126.79"-0.67%-50 mm59.6 mphcalculate →
335/30R1926.91"-0.20%+40 mm59.9 mphcalculate →

Try another size against 295/30R20

Questions

What size is 295/30R20 in inches?

295/30R20 is about 27.0" tall and 11.6" wide on a 20-inch rim — roughly a 27x11.50R20 in inch sizing.

What does 295/30R20 mean?

295 mm section width, sidewall 30% of the width (3.48"), radial construction, 20-inch rim.

What tire sizes are equivalent to 295/30R20?

On the same 20" rim, within 3% of the diameter: 255/35R20 (+0.22%), 145/60R20 (-0.44%), 225/40R20 (+0.44%), 345/25R20 (-0.66%), 245/35R20 (-0.80%), 285/30R20 (-0.88%).

How many revolutions per mile does a 295/30R20 tire make?

About 748 revolutions per mile (circumference 84.7").

How these numbers are computed

Diameter = rim + 2 × sidewall, sidewall = width × aspect ÷ 100, circumference = π × diameter, revolutions per mile = 63,360 ÷ circumference. Real tires differ by brand by a few tenths of an inch. Last reviewed October 14, 2026.