About the 245/45R17 Tire

The 245/45R17 is a common tire size for midsize sedans such as Toyota Camry, Honda Accord, and Hyundai Sonata.

With a 110.3 mm sidewall (45% aspect ratio), this tire offers a balanced blend of ride comfort and handling precision — versatile for both city driving and spirited cornering.

Compared to the baseline 225/50R17, this tire's overall diameter differs by -0.7% — a speedometer calibrated for 225/50R17 would read 100.7 km/h at an actual 100 km/h.

OE on the Mercedes-Benz E-Class (W211) sport-package trims and various RWD luxury-sedan 17" packages. Load index 95W or 99Y reinforced. Wide footprint demands 8.0-9.0" wheel widths — narrower rims pinch the bead area.

Mainstream sedan sizes balance compound longevity against light all-season handling. When replacing, match the OE speed rating (H or V on most trims) — installing a lower rating voids many manufacturer load-test certifications and is illegal on autobahn-rated vehicles. Wheel-well clearance is rarely a concern at this rim diameter; speedometer drift across factory alternatives stays well inside the ±3% legal window.

Tire Measurements

Tire Code245/45R17
Section Width245 mm
Aspect Ratio45%
Rim Diameter17"
Sidewall Height110.3 mm
Overall Diameter652.3 mm / 25.68"
Circumference2049.3 mm / 80.68"
Revolutions per km488.0
Revolutions per mile785.3

Adjacent Size Comparison

Tire Code OD (mm)Δ mmΔ % Speedo at 100 km/h
225/45R17 634.3 -18.0 -2.8% 102.8
235/45R17 643.3 -9.0 -1.4% 101.4
245/45R17 (current) 652.3 100.0
245/50R17 676.8 +24.5 +3.8% 96.4
245/45R18 677.7 +25.4 +3.9% 96.3
245/45R19 703.1 +50.8 +7.8% 92.8
245/65R17 750.3 +98.0 +15.0% 86.9

Frequently Asked Questions

What is the overall diameter of a 245/45R17 tire?
The overall diameter is 652.3 mm (25.68 in), with a 110.3 mm sidewall on a 17-inch rim.
How many revolutions per kilometer does a 245/45R17 tire make?
It makes 488.0 revolutions per kilometer, with a circumference of 2049.3 mm.
What vehicles commonly use 245/45R17 tires?
The 245/45R17 is standard OEM equipment on midsize sedans such as Toyota Camry, Honda Accord, and Hyundai Sonata. Always check your owner's manual or door placard before switching sizes.

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