Tire Size Calculator

Alternative Tire Sizes Tire Comparison
Size A    /  R
Size B    /  R

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Metric
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Alternative Tire Sizes for 245/40R18


652.8
246.4
2050
98
457.2
Size Diameter Difference Width
295/30R18 635.0 -2.72% 294.6
255/35R18 635.0 -2.72% 254.0
225/40R18 637.5 -2.33% 226.1
305/30R18 640.1 -1.95% 304.8
265/35R18 642.6 -1.56% 264.2
235/40R18 645.2 -1.17% 236.2
315/30R18 645.2 -1.17% 315.0
275/35R18 650.2 -0.39% 274.3
215/45R18 650.2 -0.39% 215.9
245/40R18 652.8 0.00% 246.4
285/35R18 657.9 +0.78% 284.5
335/30R18 657.9 +0.78% 335.3
225/45R18 660.4 +1.17% 226.1
255/40R18 660.4 +1.17% 254.0
295/35R18 662.9 +1.56% 294.6
345/30R18 662.9 +1.56% 345.4
265/40R18 668.0 +2.33% 264.2
235/45R18 668.0 +2.33% 236.2
305/35R18 670.6 +2.72% 304.8