Best 245/40 R21 Tires. Rims & Conversion Info

245/40 R21 in inches What rims fit 245/40 R21 tires What is 245/40 R21?

Best 245/40 R21 Summer Tires

Image of Michelin Pilot Super Sport ZP
Michelin Pilot Super Sport ZP
Overall: 81%
Dry: 96%
Wet: 79%
Comfort: 81%
Wear: 78%
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Image of Pirelli P Zero PZ4
Pirelli P Zero PZ4
Overall: 68.1%
Dry: 88.5%
Wet: 82.5%
Comfort: 78.5%
Wear: 57.5%
Buy again: 71%
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Image of Pirelli P Zero
Pirelli P Zero
Overall: 60.3%
Dry: 83%
Wet: 72.5%
Comfort: 70.5%
Wear: 57%
Buy again: 56%
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Image of Pirelli P Zero PZ4 Run Flat
Pirelli P Zero PZ4 Run Flat
Overall: 51%
Dry: 90%
Wet: 80%
Comfort: 73%
Wear: 56%
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Image of Bridgestone Potenza S001 RFT
Bridgestone Potenza S001 RFT
Overall: 47.1%
Dry: 76.7%
Wet: 69%
Comfort: 54.5%
Wear: 61.5%
Buy again: 54%
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Best 245/40 R21 Truck/SUV All-Season Tires

Image of Pirelli Scorpion Zero All Season Plus
Pirelli Scorpion Zero All Season Plus
Overall: 91%
Dry: 93%
Wet: 91%
Snow: 78%
Comfort: 92%
Wear: 87%
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Best 245/40 R21 Winter Tires

Image of Continental WinterContact TS 860 S
Continental WinterContact TS 860 S
Overall: 93.8%
Dry: 93.3%
Wet: 91%
Snow: 98%
Comfort: 98%
Wear: 94%
Buy again: 97%
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Image of Pirelli Winter Sottozero 3 Run Flat
Pirelli Winter Sottozero 3 Run Flat
Overall: 84%
Dry: 87%
Wet: 88%
Snow: 84%
Comfort: 83%
Wear: 80%
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Best 245/40 R21 Summer TiresBest 245/40 R21 Truck/SUV All-Season TiresBest 245/40 R21 Winter Tires

245/40 R21 in inches

245/40 R21 tires' overall diameter is 28.7 inches, tire width is 9.6 inches, the tire can be mounted on 21 inches wheel and the circumference is 90.2". With that parameters, we can calculate that it will take approximately 702.4 revolutions per mile.

Popular comparisons with this size

What rims fit 245/40 R21 tires?

For each tire size there often there are several wheel sizes. You can't put too wide tires on narrow rims or vice versa. Here is what size of the wheels your vehicle needs for 245/40 R21 tires:

Rim diameter x rim width

245/40 R21 – what does it mean?

Parameter Meaning
245 The first number shows that the tire has a section width of 245 mm or approximately 9.6 inches.
40 The second number is the aspect ratio or sidewall height. In this case, it is 40%. It shows the height of the tire from the ground to the rim edge or the height of the tire's cross-section which is 40% of the width or ~ 98mm
R21 The letter R means this tire is radial. Most of all tires nowadays are radial. The number is the tire diameter in inches. It means that the tire will fit 21-inch wheels

If you want to know more about how to decipher information inscribed on your tires, including aspects such as the tire height, tire width, and the diameter of the wheel, this guide provides an in-depth look at how to read a tire sidewall. These measurements can reveal a wealth of information about your tire's specifications and suitability for your vehicle. Mastering these details will allow you to make informed decisions when buying or replacing your tires.