215/40R17 Tire Size

All You Need to Know About 215/40R17 Tires

215/40R17 means the tire is 215 mm wide, with a 40% aspect ratio and a 17-inch wheel diameter, producing an overall diameter of ≈23.8 inches and a sidewall height of ≈3.39 inches.

The 215/40R17 size sits in the low-profile end of the 17-inch range, where sidewall height is significantly reduced compared to 50- and 60-series alternatives. This configuration prioritizes steering response and road feedback over ride comfort, placing it in performance-oriented and compact sport applications.

Where a P215/40R17 version appears, it uses the same physical dimensions as a standard 215/40R17, but follows passenger load standards. The 215/40R17 size designation (width, aspect ratio, and wheel diameter) remains unchanged, while load capacity and inflation behavior depend on the tire’s construction.

215/40R17 Size Quick Specs

• Approved rim width range: 7.0–8.5"
• Measuring/design rim: 7.5 inches
• Width: 215 mm
• Sidewall height: 86.0 mm
• Overall diameter: ≈23.8"
• Wheel diameter: 17 in

Note: The calculated overall diameter of 215/40R17 is ≈23.8 inches; minor variation (±0.1–0.3") may occur depending on tread pattern and construction.

215/40R17 Common Vehicle Fitment

215/40R17 is not a widely used OEM tire size in the US market and appears primarily in aftermarket fitments on compact and sport-oriented platforms rather than as a factory specification.

215/40R17 tire size is most commonly installed on vehicles such as:

• Honda Civic (aftermarket 17-inch setups)
• Mini Cooper (select modified configurations)
• Volkswagen Golf and GTI (lower-profile aftermarket setups)
• Scion tC and similar compact coupes (non-OE fitments)

In these applications, 215/40R17 is typically chosen to reduce sidewall height, which sharpens steering response and changes visual proportions.

Because the 215/40R17 size is often used outside original factory specifications, clearance, load index, and wheel width compatibility must be verified before installation, especially when replacing taller OE sizes.

215/40R17 Dimensions in Inches

The 215/40R17 tire size is ≈8.46 inches wide, ≈23.8 inches tall overall, and has a sidewall height of ≈3.39 inches.

At ≈23.8 inches in overall diameter, 215/40R17 corresponds to approximately 74.8 inches of circumference, which determines the distance traveled in one full rotation.

215/40R17 in Inches: All Measurements

• Overall diameter: ≈23.8"
• Width: 8.46"
• Sidewall height: 3.39"
• Wheel diameter: 17"
• Circumference: 74.78" (≈74.8")

Most Recommended 215/40R17 Tires

Best tires in 215/40R17 size include:

• All-season 215/40R17 tires: Nitto Neo Gen
• Budget-friendly 215/40R17 tires: Nexen N'Fera SU1
• 215/40R17 sets of 4 for full replacement: Falken Azenis RT615K+

Because of the low sidewall height, tire selection in this size often prioritizes handling characteristics and tread compound over ride comfort.

Comparison of 215/40R17 With Similar Tire Sizes

215/40R17 occupies a position in the lower-diameter 17-inch range, combining moderate width with a short sidewall profile.

Compared to 205/50R17, the 215/40R17 is wider but significantly smaller in overall diameter, while against 225/45R17, it remains narrower and lower-profile. These differences place 215/40R17 in a distinctly shorter, performance-oriented category where reduced sidewall height affects ride height, gearing, and comfort.

Difference Between 215/40R17 and 205/50R17 Tire Sizes

The 215/40R17 is wider but significantly shorter than the 205/50R17:

• Width: 215/40R17 is 10 mm wider compared to 205/50R17
• Overall diameter: ≈1.3 inches smaller (≈5.5% difference)

This ≈5.5% difference exceeds the ±3% threshold, so 215/40R17 cannot replace 205/50R17. The smaller 215/40R17 lowers ride height by ≈0.65" and causes the speedometer to read faster, while the larger 205/50R17 raises the vehicle and slows the speedometer reading, with potential clearance implications.

Difference Between 215/40R17 and 225/45R17 Tire Sizes

The 225/45R17 is both wider and taller than the 215/40R17:

• Width: 225/45R17 (225 mm) vs 215/40R17 (215 mm) → +10 mm
• Overall diameter: 225/45R17 (≈25.0") vs 215/40R17 (≈23.8") → ≈+1.21 inches (≈5.1%)

This ≈5.1% difference exceeds the ±3% range, so 225/45R17 is not a direct replacement for 215/40R17. Installing 225/45R17 in place of 215/40R17 increases overall diameter by ≈1.21 inches, which raises the vehicle by ≈0.60 inches, causes the speedometer to under-report actual speed, and may require additional clearance at the fender and suspension. Conversely, switching to 215/40R17 reduces overall diameter, lowering ride height and causing the speedometer to read faster than actual speed.