265/40R21 Compatible Tire Sizes

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The 265/40R21 has an overall diameter of 74.5 cm. The T&RA recommended rim width for a 265mm section width is 7.5–10 inches, with a measuring rim of 8.5 inches. This page lists 66 compatible alternatives within 3% of the original diameter. Sizes are organized by wheel diameter. Within each section, the closest match per treadwidth is shown in italics. All sizes are theoretical and there may not be an actual production tire for the size.

Use our interactive tire size compatibility lookup →

265/40R21 Specifications

Recommended Rim Width

7.5–10 in

Measuring: 8.5 in

7.5" 10"

Sidewall Height

10.6 cm

Visible Sidewall

8.9 cm

3.5 in

Overall Diameter

74.5 cm

29.3 in

Tire Size	Diameter (cm)	Sidewall (cm)	Visible SW (cm)	% Difference	Speed @ 30mph	Speed @ 60mph
245/45R20	72.8	11.0	9.3	-2.3%	29.3 mph	58.6 mph
245/50R20	75.3	12.3	10.5	+1.0%	30.3 mph	60.6 mph
255/45R20	73.8	11.5	9.7	-1.1%	29.7 mph	59.4 mph
255/50R20	76.3	12.8	11.0	+2.4%	30.7 mph	61.4 mph
265/45R20	74.7	11.9	10.2	+0.1%	30.0 mph	60.1 mph
275/40R20	72.8	11.0	9.3	-2.3%	29.3 mph	58.6 mph
275/45R20	75.5	12.4	10.6	+1.4%	30.4 mph	60.8 mph
285/40R20	73.6	11.4	9.7	-1.3%	29.6 mph	59.2 mph
285/45R20	76.5	12.8	11.1	+2.6%	30.8 mph	61.5 mph
295/40R20	74.4	11.8	10.1	-0.2%	29.9 mph	59.9 mph
305/40R20	75.2	12.2	10.5	+0.9%	30.3 mph	60.5 mph
315/35R20	72.8	11.0	9.3	-2.3%	29.3 mph	58.6 mph
315/40R20	76.0	12.6	10.9	+2.0%	30.6 mph	61.2 mph
325/35R20	73.5	11.4	9.6	-1.3%	29.6 mph	59.2 mph
335/35R20	74.3	11.7	10.0	-0.4%	29.9 mph	59.8 mph
345/35R20	74.9	12.1	10.3	+0.6%	30.2 mph	60.3 mph

Tire Size	Diameter (cm)	Sidewall (cm)	Visible SW (cm)	% Difference	Speed @ 30mph	Speed @ 60mph
245/40R21	72.9	9.8	8.1	-2.1%	29.4 mph	58.7 mph
245/45R21	75.4	11.0	9.3	+1.1%	30.3 mph	60.7 mph
255/40R21	73.7	10.2	8.5	-1.1%	29.7 mph	59.4 mph
255/45R21	76.3	11.5	9.7	+2.3%	30.7 mph	61.4 mph
265/40R21 (Original)	74.5	10.6	8.9	+0.0%	30.0 mph	60.0 mph
275/35R21	72.6	9.6	7.9	-2.6%	29.2 mph	58.4 mph
275/40R21	75.3	11.0	9.3	+1.1%	30.3 mph	60.6 mph
285/35R21	73.3	10.0	8.2	-1.7%	29.5 mph	59.0 mph
285/40R21	76.1	11.4	9.7	+2.1%	30.6 mph	61.3 mph
295/35R21	74.0	10.3	8.6	-0.7%	29.8 mph	59.6 mph
305/35R21	74.7	10.7	8.9	+0.2%	30.1 mph	60.1 mph
315/35R21	75.4	11.0	9.3	+1.1%	30.3 mph	60.7 mph
325/30R21	72.8	9.8	8.0	-2.3%	29.3 mph	58.6 mph
325/35R21	76.1	11.4	9.6	+2.1%	30.6 mph	61.2 mph
335/30R21	73.4	10.0	8.3	-1.5%	29.6 mph	59.1 mph
345/30R21	74.0	10.3	8.6	-0.7%	29.8 mph	59.6 mph

Tire Size	Diameter (cm)	Sidewall (cm)	Visible SW (cm)	% Difference	Speed @ 30mph	Speed @ 60mph
245/35R22	73.0	8.6	6.8	-2.0%	29.4 mph	58.8 mph
245/40R22	75.5	9.8	8.1	+1.3%	30.4 mph	60.8 mph
255/35R22	73.7	8.9	7.2	-1.1%	29.7 mph	59.3 mph
255/40R22	76.3	10.2	8.5	+2.3%	30.7 mph	61.4 mph
265/35R22	74.4	9.3	7.5	-0.1%	30.0 mph	59.9 mph
275/30R22	72.4	8.3	6.5	-2.9%	29.1 mph	58.3 mph
275/35R22	75.1	9.6	7.9	+0.8%	30.2 mph	60.5 mph
285/30R22	73.0	8.5	6.8	-2.1%	29.4 mph	58.7 mph
285/35R22	75.8	10.0	8.2	+1.7%	30.5 mph	61.0 mph
295/30R22	73.6	8.8	7.1	-1.3%	29.6 mph	59.2 mph
295/35R22	76.5	10.3	8.6	+2.7%	30.8 mph	61.6 mph
305/30R22	74.2	9.2	7.4	-0.5%	29.9 mph	59.7 mph
315/30R22	74.8	9.4	7.7	+0.3%	30.1 mph	60.2 mph
325/30R22	75.4	9.8	8.0	+1.1%	30.3 mph	60.7 mph
335/25R22	72.6	8.4	6.6	-2.6%	29.2 mph	58.5 mph
335/30R22	76.0	10.0	8.3	+1.9%	30.6 mph	61.2 mph
345/25R22	73.1	8.6	6.9	-1.9%	29.4 mph	58.9 mph
345/30R22	76.6	10.3	8.6	+2.7%	30.8 mph	61.6 mph

Current Tire Pricing

Tire	Size	Price/Tire
265/40R21
Michelin Pilot Sport 4SMax Performance Summer	265/40R21	$456.99
Vredestein Ultrac ProMax Performance Summer	265/40R21	$268.34
Bridgestone Potenza SportMax Performance Summer	265/40R21	$438.99
Continental ExtremeContact DWS 06 PlusUltra High Performance All-Season	265/40R21	$345.99
Michelin Pilot Sport All Season 4Ultra High Performance All-Season	265/40R21	$413.99
Michelin CrossClimate2Grand Touring All-Season	265/40R21	$458.99
Vredestein Quatrac Pro+Grand Touring All-Season	265/40R21	$381.77
Vredestein Wintrac Pro+Performance Winter / Snow	265/40R21	$325.41
Pirelli Scorpion WinterPerformance Winter / Snow	265/40R21	$444.20
Alternative Sizes · 275/35R21, 255/40R21, 255/45R21, 275/40R21
Michelin Pilot Sport Cup 2 (240)Extreme Performance Summer	275/35R21	$648.99
Michelin Pilot Sport 4SMax Performance Summer	255/40R21	$533.99
Vredestein Ultrac ProMax Performance Summer	255/40R21	$313.56
Bridgestone Potenza SportMax Performance Summer	255/40R21	$451.99
Bridgestone Potenza SportMax Performance Summer	255/45R21	$443.99
Kumho Ecsta Sport SMax Performance Summer	275/35R21	Check Price
Michelin Pilot Sport 4SMax Performance Summer	275/35R21	$579.99
Michelin Pilot Sport 4Max Performance Summer	275/35R21	$584.99
Vredestein Ultrac ProMax Performance Summer	275/35R21	$322.35
Vredestein Ultrac ProMax Performance Summer	275/40R21	$280.57
Bridgestone Potenza SportMax Performance Summer	275/35R21	$559.99
Continental ExtremeContact DWS 06 PlusUltra High Performance All-Season	255/40R21	$381.99
Michelin Pilot Sport All Season 4Ultra High Performance All-Season	255/40R21	$446.99
Michelin Pilot Sport All Season 4Ultra High Performance All-Season	255/45R21	$472.99
Continental ExtremeContact DWS 06 PlusUltra High Performance All-Season	275/35R21	$418.99
Continental ExtremeContact DWS 06 PlusUltra High Performance All-Season	275/40R21	$329.99
Michelin Pilot Sport All Season 4Ultra High Performance All-Season	275/35R21	$487.99
Michelin Pilot Sport All Season 4Ultra High Performance All-Season	275/40R21	$352.92
Michelin CrossClimate2Grand Touring All-Season	255/40R21	$367.99
Vredestein Quatrac Pro+Grand Touring All-Season	255/40R21	$295.77
Goodyear Assurance WeatherReady2Grand Touring All-Season	255/40R21	$359.99
Michelin CrossClimate2Grand Touring All-Season	275/40R21	$441.99
Vredestein Quatrac Pro+Grand Touring All-Season	275/35R21	$314.77
Vredestein Quatrac Pro+Grand Touring All-Season	275/40R21	$318.77
Goodyear Assurance WeatherReady2Grand Touring All-Season	275/40R21	$427.99
Michelin Pilot Alpin 5 SUVPerformance Winter / Snow	255/45R21	$352.50
Vredestein Wintrac Pro+Performance Winter / Snow	255/40R21	$306.95
Pirelli Scorpion Winter 2Performance Winter / Snow	255/40R21	$395.90
Pirelli Scorpion Winter 2Performance Winter / Snow	255/45R21	$485.85
Michelin Pilot Alpin 5Performance Winter / Snow	275/35R21	$558.99
Michelin Pilot Alpin 5 SUVPerformance Winter / Snow	275/40R21	$436.48
Vredestein Wintrac Pro+Performance Winter / Snow	275/35R21	$376.08
Vredestein Wintrac Pro+Performance Winter / Snow	275/40R21	$320.29
Pirelli Scorpion Winter 2Performance Winter / Snow	275/40R21	$433.10
Pirelli Scorpion WinterPerformance Winter / Snow	275/40R21	$483.38
Michelin X-Ice Snow SUVStudless Ice & Snow	255/45R21	$283.86

Price availability updated May 2026. Actual prices may vary.

Tire Recommendations

Extreme Performance Summer

Track days, autocross, and maximum dry grip

Hoosier Track Attack Pro

Treadwear: 200

325/35R20 -1", +60mm

Nankang Sportnex CR-S

Treadwear: 200

325/30R21 +60mm 335/30R21 +70mm

Vitour Tempesta P1 P-01R

Treadwear: 200

325/30R21 +60mm 335/30R21 +70mm

Michelin Pilot Sport Cup 2 (240)

Treadwear: 240

275/35R21 +10mm 325/30R21 +60mm 335/30R21 +70mm

Max Performance Summer

Spirited street driving and occasional track use

Continental ExtremeContact Sport

Treadwear: 340

245/45R20 -1", -20mm 275/40R20 -1", +10mm 315/35R20 -1", +50mm

Kumho Ecsta Sport S

Treadwear: 260

275/40R20 -1", +10mm 315/35R20 -1", +50mm 275/35R21 +10mm 325/30R21 +60mm 285/30R22 +1", +20mm

Michelin Pilot Sport 4S

Treadwear: 300

265/40R21 245/45R20 -1", -20mm 255/45R20 -1", -10mm 275/40R20 -1", +10mm 315/35R20 -1", +50mm 245/40R21 -20mm 255/40R21 -10mm 275/35R21 +10mm 285/35R21 +20mm 295/35R21 +30mm 325/30R21 +60mm 255/35R22 +1", -10mm 265/35R22 +1" 275/35R22 +1", +10mm 285/30R22 +1", +20mm 285/35R22 +1", +20mm 295/35R22 +1", +30mm 315/30R22 +1", +50mm 335/25R22 +1", +70mm

Michelin Pilot Sport 4

Treadwear: 320

245/45R20 -1", -20mm 275/40R20 -1", +10mm 285/40R20 -1", +20mm 315/35R20 -1", +50mm 275/35R21 +10mm 325/30R21 +60mm

Bridgestone Potenza Sport

Treadwear: 300

265/40R21 245/45R20 -1", -20mm 255/45R20 -1", -10mm 255/50R20 -1", -10mm 265/45R20 -1" 275/40R20 -1", +10mm 275/45R20 -1", +10mm 285/45R20 -1", +20mm 295/40R20 -1", +30mm 315/35R20 -1", +50mm 255/40R21 -10mm 255/45R21 -10mm 275/35R21 +10mm 295/35R21 +30mm 325/30R21 +60mm 345/30R21 +80mm 255/35R22 +1", -10mm 255/40R22 +1", -10mm 295/35R22 +1", +30mm

Ultra High Performance All-Season

Year-round daily driving with performance capability

Pirelli P Zero AS Plus 3

Treadwear: 560

245/45R20 -1", -20mm 275/40R20 -1", +10mm

Continental ExtremeContact DWS 06 Plus

Treadwear: 560

265/40R21 245/45R20 -1", -20mm 255/45R20 -1", -10mm 255/50R20 -1", -10mm 265/45R20 -1" 275/40R20 -1", +10mm 275/45R20 -1", +10mm 285/45R20 -1", +20mm 295/40R20 -1", +30mm 315/35R20 -1", +50mm 255/40R21 -10mm 275/35R21 +10mm 275/40R21 +10mm 285/40R21 +20mm 295/35R21 +30mm 265/35R22 +1" 275/35R22 +1", +10mm 285/30R22 +1", +20mm 285/35R22 +1", +20mm

Bridgestone Potenza RE980AS+

Treadwear: 500

245/45R20 -1", -20mm 255/45R20 -1", -10mm 275/40R20 -1", +10mm

Grand Touring All-Season

Comfortable, long-wearing all-season tires for daily driving

Michelin CrossClimate2

Treadwear: 640

265/40R21 245/45R20 -1", -20mm 245/50R20 -1", -20mm 255/45R20 -1", -10mm 255/50R20 -1", -10mm 265/45R20 -1" 275/45R20 -1", +10mm 285/40R20 -1", +20mm 285/45R20 -1", +20mm 245/45R21 -20mm 255/40R21 -10mm 275/40R21 +10mm

Vredestein Quatrac Pro+

Treadwear: 400

265/40R21 245/45R20 -1", -20mm 255/45R20 -1", -10mm 255/50R20 -1", -10mm 265/45R20 -1" 275/40R20 -1", +10mm 275/45R20 -1", +10mm 285/45R20 -1", +20mm 315/35R20 -1", +50mm 255/40R21 -10mm 275/35R21 +10mm 275/40R21 +10mm 285/40R21 +20mm 295/35R21 +30mm 285/35R22 +1", +20mm

Continental SecureContact AW

Treadwear: 700

245/45R20 -1", -20mm 245/50R20 -1", -20mm 255/50R20 -1", -10mm

Goodyear Assurance WeatherReady2

Treadwear: 700

245/45R20 -1", -20mm 245/50R20 -1", -20mm 255/45R20 -1", -10mm 255/50R20 -1", -10mm 265/45R20 -1" 275/45R20 -1", +10mm 285/45R20 -1", +20mm 255/40R21 -10mm 275/40R21 +10mm

On-Road All-Terrain

Pavement-primary with light off-road and gravel capability

Cooper Discoverer Road+Trail AT

Treadwear: 620

245/50R20 -1", -20mm

Falken WildPeak A/T Trail

Treadwear: 620

245/50R20 -1", -20mm 255/45R20 -1", -10mm 255/50R20 -1", -10mm 265/45R20 -1" 275/45R20 -1", +10mm

Nitto Nomad Grappler

Treadwear: 620

245/45R20 -1", -20mm 245/50R20 -1", -20mm 255/45R20 -1", -10mm 255/50R20 -1", -10mm 265/45R20 -1" 275/45R20 -1", +10mm

Vredestein Pinza AT

Treadwear: 620

245/50R20 -1", -20mm 255/50R20 -1", -10mm

Yokohama Geolandar A/T4

Treadwear: 700

245/50R20 -1", -20mm 255/50R20 -1", -10mm

Off-Road All-Terrain

Adventure-ready traction for both trails and pavement

Toyo Open Country A/T III

Treadwear: None

245/50R20 -1", -20mm 255/50R20 -1", -10mm

How to Use This Information

Stay within 3%: All listed tire sizes maintain proper speedometer accuracy and vehicle dynamics
Consider aspect ratio: Lower numbers mean shorter sidewalls (better handling, harsher ride)
Treadwidth matters: Wider tires typically offer more grip but may reduce fuel economy
Check clearance: Ensure your vehicle has adequate wheel well and suspension clearance

Want to look up compatibility for a different tire size? Use our tire size compatibility lookup

265/40R21 Compatible Tire Sizes

265/40R21 Specifications

20" Wheel Diameter

21" Wheel Diameter (Original)

22" Wheel Diameter

Current Tire Pricing

Tire Recommendations

Extreme Performance Summer

Hoosier Track Attack Pro

Nankang Sportnex CR-S

Vitour Tempesta P1 P-01R

Michelin Pilot Sport Cup 2 (240)

Max Performance Summer

Continental ExtremeContact Sport

Kumho Ecsta Sport S

Michelin Pilot Sport 4S

Michelin Pilot Sport 4

Vredestein Ultrac Pro

Bridgestone Potenza Sport

Ultra High Performance All-Season

Pirelli P Zero AS Plus 3

Continental ExtremeContact DWS 06 Plus

Bridgestone Potenza RE980AS+

Michelin Pilot Sport All Season 4

Grand Touring All-Season

Michelin CrossClimate2

Vredestein Quatrac Pro+

Continental SecureContact AW

Goodyear Assurance WeatherReady2

On-Road All-Terrain

Cooper Discoverer Road+Trail AT

Falken WildPeak A/T Trail

Nitto Nomad Grappler

Vredestein Pinza AT

Yokohama Geolandar A/T4

Off-Road All-Terrain

Toyo Open Country A/T III

How to Use This Information