615/35R18 Tire Size Specifications
This tire size 615/35R18 fits 0 vehicles in our database.
Everything to know about the 615/35R18 tire size
Size geometry
A 615/35R18 tire has a 615mm section width and a 35% aspect ratio, mounted on a 18-inch rim. Sidewall height works out to 215.3mm (8.47") and overall outside diameter is 887.7mm (34.95"). At highway speed the tire completes about 359 revolutions per kilometre â your speedometer and odometer were calibrated against this number.
Direct substitute sizes
If 615/35R18 is unavailable, the closest same-diameter substitutes on the same rim are 605/36R18 and 625/34R18. Both keep your speedometer reading within 1% â safe for daily use, ABS, and stability control. Always verify load and speed ratings before swapping.
Plus / minus sizing options
For a 615/35R18 you can upsize to 625/32R19 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 605/38R17 (minus-one) for a softer ride or winter setup. Both stay inside the Âą3% diameter tolerance that ABS and TPMS systems expect.
Vehicle compatibility
0 vehicles in our database run the 615/35R18 tire size from the factory. Aftermarket fitment depends on rim width, offset, and clearance â match these specs to your wheel before purchasing tires.
Vehicles Using 615/35R18
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