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295/35R21 Tire Size
All You Need to Know About 295/35R21 Tires
295/35R21 tires have a section width of 295 millimetres (mm), an aspect ratio of 35%, radial construction, and a 21-inch wheel diameter. Before buying tires sized 295/35R21, converting 295/35R21 measurements into inches, comparing them with similar tire sizes such as 295/40R21 and 285/40R21, and researching the best 295/35R21 tires helps drivers shop for the correct fit.
What Are The Dimensions of a 295/35R21 Tire in Inches?
The 295/35R21 tire has a section width of approximately 11.61 inches (≈ 11.6"), and a sidewall height of 4.07 inches (≈ 4.1"). The overall diameter of a 295/35R21 tire is about 29.13 inches (≈ 29.1"), and the circumference is approximately 91.52 inches (≈ 91.5"). The recommended rim width range for the 295/35R21 size is 10.0 to 11.5 inches. In inches, the 295/35R21 tire size can be represented as 29.13" × 11.61" R21.
Comparison of 295/35R21 With Similar Tire Sizes
Comparing 295/35R21 with alternatives such as 295/40R21 and 285/40R21 illustrates how changes in aspect ratio and section width affect overall diameter, ride height, handling, and speedometer accuracy. While all three sizes fit 21-inch wheels, the dimensional differences affect interchangeability, making some swaps marginal and others more suitable depending on vehicle specifications and intended driving characteristics.
What Is The Difference Between 295/35R21 vs 295/40R21?
The main difference between 295/35R21 and 295/40R21 is the aspect ratio. The 295/35R21 has a sidewall height of 103.25 mm (≈ 4.07") and an overall diameter of 739.90 mm (≈ 29.13"). The 295/40R21 has a sidewall height of 118.00 mm (≈ 4.65") and an overall diameter of 769.40 mm (≈ 30.29"). This means the 295/40R21 sidewall is 14.75 mm (≈ 0.58") taller, and the overall diameter is 29.50 mm (≈ 1.16") larger than the 295/35R21.
295/35R21 vs 295/40R21 Tire Size Comparison Table
Tire Dimension | 295/35R21 (mm & in) | 295/40R21 (mm & in) | Difference (mm & in) | Percentage Difference |
Section Width | 295 mm (≈ 11.61") | 295 mm (≈ 11.61") | 0 | 0% |
Sidewall Height | 103.25 mm (≈ 4.07") | 118.00 mm (≈ 4.65") | 14.75 mm (≈ 0.58") | ≈ 14.3% |
Overall Diameter | 739.90 mm (≈ 29.13") | 769.40 mm (≈ 30.29") | 29.50 mm (≈ 1.16") | ≈ 3.99% |
Circumference | 2324.46 mm (≈ 91.52") | 2417.14 mm (≈ 95.16") | 92.68 mm (≈ 3.65") | ≈ 3.99% |
Radius | 369.95 mm (≈ 14.57") | 384.70 mm (≈ 15.15") | 14.75 mm (≈ 0.58") | ≈ 3.99% |
Rim Diameter | 533.4 mm (21") | 533.4 mm (21") | — | — |
Recommended Rim Width | 10.0–11.5" | 10.0–11.5" | — | — |
Can I use 295/40R21 instead of 295/35R21?
This is a borderline (marginal) replacement. The tire will fit the same 21-inch wheels, but the overall diameter increase of ≈ 3.99% slightly exceeds the commonly cited ±3% industry guideline. There is a high probability of the tire rubbing against the plastic inner fender liner when the steering wheel is turned all the way to one side (full lock).
Expect your speedometer to read a bit slow (at an indicated 60 mph, actual speed is about 62.4 mph, ≈ +2.4 mph), plus a noticeable ride-height increase and a softer, less “sharp” feel due to the taller sidewall (The extra half-inch of "meat" in the sidewall will soak up bumps better (softer ride) but will feel "mushy" during aggressive cornering). If you’re considering this swap, it’s best to verify manufacturer fitment guidance and confirm there’s enough clearance at full steering lock and suspension compression.
What Is The Difference Between 295/35R21 vs 285/40R21?
The main differences between 295/35R21 and 285/40R21 are the cross section width and aspect ratio. The 295/35R21 is 295 mm wide with a 35% aspect ratio, while the 285/40R21 is 285 mm wide with a 40% aspect ratio. The 295/35R21 has a sidewall height of 103.25 mm (≈ 4.07") and an overall diameter of 739.90 mm (≈ 29.13"). The 285/40R21 has a sidewall height of 114.00 mm (≈ 4.49") and an overall diameter of 761.40 mm (≈ 29.98"). This means the 295/35R21 is 10 mm wider, has a 10.75 mm (≈ 0.42") shorter sidewall, and is 21.50 mm (≈ 0.85") smaller overall than the 285/40R21.
295/35R21 vs 285/40R21 Tire Size Comparison Table
Tire Dimension | 295/35R21 (mm & in) | 285/40R21 (mm & in) | Difference (mm & in) | Percentage Difference |
Section Width | 295 mm (≈ 11.61") | 285 mm (≈ 11.22") | 10 mm (≈ 0.39") | ≈ 3.4% |
Sidewall Height | 103.25 mm (≈ 4.07") | 114.00 mm (≈ 4.49") | 10.75 mm (≈ 0.42") | ≈ 10.4% |
Overall Diameter | 739.90 mm (≈ 29.13") | 761.40 mm (≈ 29.98") | 21.50 mm (≈ 0.85") | ≈ 2.91% |
Circumference | 2324.46 mm (≈ 91.52") | 2392.01 mm (≈ 94.17") | 67.54 mm (≈ 2.66") | ≈ 2.91% |
Radius | 369.95 mm (≈ 14.57") | 380.70 mm (≈ 14.99") | 10.75 mm (≈ 0.42") | ≈ 2.91% |
Rim Diameter | 533.4 mm (21") | 533.4 mm (21") | — | — |
Recommended Rim Width | 10.0–11.5" | 9.5–11.0" | — | — |
Can I use 285/40R21 instead of 295/35R21?
Yes, this is generally an acceptable within-guideline alternative. The overall diameter change is ≈ 2.91%, which stays inside the commonly referenced ±3% range. You may notice a slightly softer ride and a small speedometer change (at an indicated 60 mph, actual speed is about 61.7 mph, ≈ +1.7 mph), but this swap is typically reasonable as long as wheel width and clearance are suitable. Consider that both tires fit a 10.0" or 10.5" wheel perfectly. However, if your current rear wheels are 11.5" wide (common on some Porsches), the 285-width tire is technically too narrow for that specific rim.
Also, if your car is All-Wheel Drive and uses a staggered setup (different sizes front and rear), you must ensure that whatever you do to the rear, you also do a proportional change to the front to keep the diameters matched.
Recommended 285/40R21 Tires
If you plan to make the switch to 285/40R21 instead of 295/35R21, well-regarded options in this size include:
All You Need to Know About 295/35R21 Tires
295/35R21 tires have a section width of 295 millimetres (mm), an aspect ratio of 35%, radial construction, and a 21-inch wheel diameter. Before buying tires sized 295/35R21, converting 295/35R21 measurements into inches, comparing them with similar tire sizes such as 295/40R21 and 285/40R21, and researching the best 295/35R21 tires helps drivers shop for the correct fit.
What Are The Dimensions of a 295/35R21 Tire in Inches?
The 295/35R21 tire has a section width of approximately 11.61 inches (≈ 11.6"), and a sidewall height of 4.07 inches (≈ 4.1"). The overall diameter of a 295/35R21 tire is about 29.13 inches (≈ 29.1"), and the circumference is approximately 91.52 inches (≈ 91.5"). The recommended rim width range for the 295/35R21 size is 10.0 to 11.5 inches. In inches, the 295/35R21 tire size can be represented as 29.13" × 11.61" R21.
Comparison of 295/35R21 With Similar Tire Sizes
Comparing 295/35R21 with alternatives such as 295/40R21 and 285/40R21 illustrates how changes in aspect ratio and section width affect overall diameter, ride height, handling, and speedometer accuracy. While all three sizes fit 21-inch wheels, the dimensional differences affect interchangeability, making some swaps marginal and others more suitable depending on vehicle specifications and intended driving characteristics.
What Is The Difference Between 295/35R21 vs 295/40R21?
The main difference between 295/35R21 and 295/40R21 is the aspect ratio. The 295/35R21 has a sidewall height of 103.25 mm (≈ 4.07") and an overall diameter of 739.90 mm (≈ 29.13"). The 295/40R21 has a sidewall height of 118.00 mm (≈ 4.65") and an overall diameter of 769.40 mm (≈ 30.29"). This means the 295/40R21 sidewall is 14.75 mm (≈ 0.58") taller, and the overall diameter is 29.50 mm (≈ 1.16") larger than the 295/35R21.
295/35R21 vs 295/40R21 Tire Size Comparison Table
Tire Dimension | 295/35R21 (mm & in) | 295/40R21 (mm & in) | Difference (mm & in) | Percentage Difference |
Section Width | 295 mm (≈ 11.61") | 295 mm (≈ 11.61") | 0 | 0% |
Sidewall Height | 103.25 mm (≈ 4.07") | 118.00 mm (≈ 4.65") | 14.75 mm (≈ 0.58") | ≈ 14.3% |
Overall Diameter | 739.90 mm (≈ 29.13") | 769.40 mm (≈ 30.29") | 29.50 mm (≈ 1.16") | ≈ 3.99% |
Circumference | 2324.46 mm (≈ 91.52") | 2417.14 mm (≈ 95.16") | 92.68 mm (≈ 3.65") | ≈ 3.99% |
Radius | 369.95 mm (≈ 14.57") | 384.70 mm (≈ 15.15") | 14.75 mm (≈ 0.58") | ≈ 3.99% |
Rim Diameter | 533.4 mm (21") | 533.4 mm (21") | — | — |
Recommended Rim Width | 10.0–11.5" | 10.0–11.5" | — | — |
Can I use 295/40R21 instead of 295/35R21?
This is a borderline (marginal) replacement. The tire will fit the same 21-inch wheels, but the overall diameter increase of ≈ 3.99% slightly exceeds the commonly cited ±3% industry guideline. There is a high probability of the tire rubbing against the plastic inner fender liner when the steering wheel is turned all the way to one side (full lock).
Expect your speedometer to read a bit slow (at an indicated 60 mph, actual speed is about 62.4 mph, ≈ +2.4 mph), plus a noticeable ride-height increase and a softer, less “sharp” feel due to the taller sidewall (The extra half-inch of "meat" in the sidewall will soak up bumps better (softer ride) but will feel "mushy" during aggressive cornering). If you’re considering this swap, it’s best to verify manufacturer fitment guidance and confirm there’s enough clearance at full steering lock and suspension compression.
What Is The Difference Between 295/35R21 vs 285/40R21?
The main differences between 295/35R21 and 285/40R21 are the cross section width and aspect ratio. The 295/35R21 is 295 mm wide with a 35% aspect ratio, while the 285/40R21 is 285 mm wide with a 40% aspect ratio. The 295/35R21 has a sidewall height of 103.25 mm (≈ 4.07") and an overall diameter of 739.90 mm (≈ 29.13"). The 285/40R21 has a sidewall height of 114.00 mm (≈ 4.49") and an overall diameter of 761.40 mm (≈ 29.98"). This means the 295/35R21 is 10 mm wider, has a 10.75 mm (≈ 0.42") shorter sidewall, and is 21.50 mm (≈ 0.85") smaller overall than the 285/40R21.
295/35R21 vs 285/40R21 Tire Size Comparison Table
Tire Dimension | 295/35R21 (mm & in) | 285/40R21 (mm & in) | Difference (mm & in) | Percentage Difference |
Section Width | 295 mm (≈ 11.61") | 285 mm (≈ 11.22") | 10 mm (≈ 0.39") | ≈ 3.4% |
Sidewall Height | 103.25 mm (≈ 4.07") | 114.00 mm (≈ 4.49") | 10.75 mm (≈ 0.42") | ≈ 10.4% |
Overall Diameter | 739.90 mm (≈ 29.13") | 761.40 mm (≈ 29.98") | 21.50 mm (≈ 0.85") | ≈ 2.91% |
Circumference | 2324.46 mm (≈ 91.52") | 2392.01 mm (≈ 94.17") | 67.54 mm (≈ 2.66") | ≈ 2.91% |
Radius | 369.95 mm (≈ 14.57") | 380.70 mm (≈ 14.99") | 10.75 mm (≈ 0.42") | ≈ 2.91% |
Rim Diameter | 533.4 mm (21") | 533.4 mm (21") | — | — |
Recommended Rim Width | 10.0–11.5" | 9.5–11.0" | — | — |
Can I use 285/40R21 instead of 295/35R21?
Yes, this is generally an acceptable within-guideline alternative. The overall diameter change is ≈ 2.91%, which stays inside the commonly referenced ±3% range. You may notice a slightly softer ride and a small speedometer change (at an indicated 60 mph, actual speed is about 61.7 mph, ≈ +1.7 mph), but this swap is typically reasonable as long as wheel width and clearance are suitable. Consider that both tires fit a 10.0" or 10.5" wheel perfectly. However, if your current rear wheels are 11.5" wide (common on some Porsches), the 285-width tire is technically too narrow for that specific rim.
Also, if your car is All-Wheel Drive and uses a staggered setup (different sizes front and rear), you must ensure that whatever you do to the rear, you also do a proportional change to the front to keep the diameters matched.
Recommended 285/40R21 Tires
If you plan to make the switch to 285/40R21 instead of 295/35R21, well-regarded options in this size include:
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