235/60R18 vs 245/60R18Tire Size Comparison

Safe

The 1.6% diameter difference is within the accepted 3% tolerance.

235/60R18739mm dia245/60R18751mm dia+6.0mm

Comparison Details

Overall Diameter739.2 vs 751.2 mm (+12.0 mm)
Diameter Difference+1.62%
Section Width235 vs 245 mm (+10 mm)
Sidewall Height141.0 vs 147.0 mm (+6.0 mm)
Circumference2322.3 vs 2360.0 mm
Clearance Change+6.0 mm
Speedometer Error+1.62%
Revs/Mile693 vs 682

Speedometer Correction

When switching from 235/60R18 to 245/60R18, your speedometer will differ from actual speed.

SpeedometerActual SpeedDifference
30 km/h30.5 km/h+0.5 km/h
40 km/h40.6 km/h+0.6 km/h
50 km/h50.8 km/h+0.8 km/h
60 km/h61.0 km/h+1.0 km/h
70 km/h71.1 km/h+1.1 km/h
80 km/h81.3 km/h+1.3 km/h
90 km/h91.5 km/h+1.5 km/h
100 km/h101.6 km/h+1.6 km/h
110 km/h111.8 km/h+1.8 km/h
120 km/h121.9 km/h+1.9 km/h
130 km/h132.1 km/h+2.1 km/h

Vehicles Using These Sizes

Vehicles with 235/60R18

2025 Acura RDXBase2025 Acura RDXTechnology2024 Acura RDXBase2023 Acura RDXBase2022 Acura RDXBase2021 Acura RDXBase2020 Acura RDXBase2025 Audi Q5Premium 45 TFSI quattro2024 Audi Q5Premium 45 TFSI quattro2023 Audi Q5Premium 45 TFSI quattro2022 Audi Q5Premium 45 TFSI quattro2021 Audi Q5Premium 45 TFSI quattro2020 Audi Q5Premium 45 TFSI quattro2026 Chevrolet EquinoxLT2025 Chrysler PacificaTouring2024 Chrysler PacificaTouring2023 Chrysler PacificaTouring2022 Chrysler PacificaTouring2021 Chrysler PacificaTouring2026 Honda CR-VEX / EX-L / Sport Hybrid / Sport-L Hybrid / TrailSport Hybrid / FCEV2025 Honda CR-VEX2024 Honda CR-VEX2023 Honda CR-VEX2022 Honda CR-VEX-L/Touring2021 Honda CR-VEX-L/Touring2020 Honda CR-VEX-L/Touring2025 Lexus RXRX 3502025 Lexus RXRX 350h/RX 500h2024 Lexus RXRX 3502024 Lexus RXRX 350h/RX 500h2023 Lexus RXRX 3502023 Lexus RXRX 350h/RX 500h2026 Toyota RAV4XLE / XLE Premium / SE / Limited (18")2025 Volvo XC60Core B5 AWD2024 Volvo XC60Core B5 AWD2023 Volvo XC60B5 Momentum2022 Volvo XC60T5 Momentum2021 Volvo XC60T5 Momentum2020 Volvo XC60T5 Momentum

Vehicles with 245/60R18

2021 Acura MDXBase2020 Acura MDXBase2025 Honda PilotLX/Sport2024 Honda PilotLX/Sport2023 Honda PilotSport/EX-L2022 Honda PilotSport/EX-L2021 Honda PilotLX/EX2020 Honda PilotLX/EX2025 Hyundai PalisadeSE/SEL2024 Hyundai PalisadeSE/SEL2023 Hyundai PalisadeSE/SEL2022 Hyundai PalisadeSE/SEL2021 Hyundai PalisadeSE/SEL2020 Hyundai PalisadeSE/SEL2025 Kia TellurideLX/EX2024 Kia TellurideLX/EX2023 Kia TellurideLX/EX2022 Kia TellurideLX/EX/S2021 Kia TellurideLX/EX/S2020 Kia TellurideLX/EX/S

Individual Tire Size Details

235/60R18
Full specifications, compatible vehicles, and alternatives
245/60R18
Full specifications, compatible vehicles, and alternatives

Practical Guidance

Switching from 235/60R18 to 245/60R18 is within the industry-accepted 3% diameter tolerance. Your speedometer, ABS, and traction control should function normally. Both sizes fit the same 18-inch rim, so no wheel change is needed.

The 3% diameter tolerance is a widely accepted industry guideline referenced by the ETRTO and most vehicle manufacturers. When in doubt, consult your vehicle's owner's manual or a qualified tire professional. For U.S. tire safety standards and recalls, see the NHTSA Tire Safety page.

Frequently Asked Questions

Safe. The overall diameter differs by 1.62%, width changes by 10mm.

Speedometer error will be 1.62%. At an indicated 100 km/h, actual speed is about 101.6 km/h.

Ground clearance changes by +6.0mm per side.