Explore a size change
Tire size comparisons
These 177 reviewed comparisons show nominal dimensions, speed estimates, and the checks still needed. The percentage is the change from the first tire to the second, not an installation approval.
Start with your current tire size to narrow the list, or enter any supported pair in the calculator.
Same rim diameter
Compare nearby sizes with the same nominal rim diameter. Approved rim widths still depend on the exact tire model.
- 185/65R15 vs 195/60R15-1.05% diameter
- 185/65R15 vs 195/65R15+2.09% diameter
- 195/60R15 vs 205/60R15+1.95% diameter
- 195/65R15 vs 205/60R15-1.18% diameter
- 195/65R15 vs 205/65R15+2.05% diameter
- 195/65R15 vs 215/60R15+0.71% diameter
- 205/50R17 vs 225/45R17-0.39% diameter
- 205/55R16 vs 225/50R16-0.08% diameter
- 205/60R16 vs 215/60R16+1.84% diameter
- 205/60R16 vs 225/55R16+0.23% diameter
- 205/70R15 vs 215/70R15+2.10% diameter
- 205/75R15 vs 215/70R15-0.94% diameter
- 205/75R15 vs 225/70R15+1.09% diameter
- 215/45R17 vs 225/45R17+1.44% diameter
- 215/50R17 vs 225/45R17-1.93% diameter
- 215/50R17 vs 225/50R17+1.55% diameter
- 215/55R17 vs 225/50R17-1.72% diameter
- 215/60R16 vs 225/60R16+1.81% diameter
- 215/65R16 vs 225/60R16-1.39% diameter
- 215/65R16 vs 235/60R16+0.36% diameter
- 215/65R17 vs 225/60R17-1.34% diameter
- 215/75R15 vs 225/75R15+2.13% diameter
- 215/85R16 vs 235/80R16+1.36% diameter
- 225/45R17 vs 235/45R17+1.42% diameter
- 225/50R17 vs 245/45R17-0.69% diameter
- 225/60R17 vs 235/55R17-1.64% diameter
- 225/65R17 vs 235/65R17+1.79% diameter
- 225/75R15 vs 235/70R15-1.18% diameter
- 225/75R15 vs 235/75R15+2.09% diameter
- 225/75R16 vs 235/70R16-1.14% diameter
- 225/75R16 vs 235/75R16+2.02% diameter
- 225/75R16 vs 245/70R16+0.74% diameter
- 235/65R17 vs 245/65R17+1.76% diameter
- 235/70R16 vs 245/70R16+1.90% diameter
- 235/70R16 vs 255/65R16+0.34% diameter
- 235/75R15 vs 255/70R15+0.61% diameter
- 235/80R16 vs 245/75R16-1.09% diameter
- 235/80R16 vs 255/70R16-2.43% diameter
- 245/40R21 vs 255/40R21+1.10% diameter
- 245/40R21 vs 265/35R21-1.44% diameter
- 245/45R20 vs 255/45R20+1.24% diameter
- 245/45R20 vs 265/40R20-1.17% diameter
- 245/75R16 vs 255/70R16-1.36% diameter
- 245/75R16 vs 265/70R16+0.45% diameter
- 245/75R17 vs 265/70R17+0.44% diameter
- 255/35R22 vs 265/35R22+0.95% diameter
- 255/35R22 vs 275/35R22+1.90% diameter
- 255/40R21 vs 265/35R21-2.51% diameter
- 255/40R21 vs 275/35R21-1.56% diameter
- 255/45R20 vs 265/40R20-2.37% diameter
- 255/45R20 vs 275/40R20-1.29% diameter
- 255/70R16 vs 265/70R16+1.83% diameter
- 255/75R16 vs 265/75R16+1.90% diameter
- 255/75R17 vs 265/70R17-1.41% diameter
- 265/35R21 vs 275/35R21+0.97% diameter
- 265/35R21 vs 285/35R21+1.95% diameter
- 265/35R22 vs 275/35R22+0.94% diameter
- 265/35R22 vs 285/30R22-1.95% diameter
- 265/40R20 vs 275/40R20+1.11% diameter
- 265/40R20 vs 285/40R20+2.22% diameter
- 265/75R16 vs 275/70R16-1.55% diameter
- 275/35R21 vs 285/35R21+0.96% diameter
- 275/35R22 vs 285/30R22-2.86% diameter
- 275/40R20 vs 285/40R20+1.10% diameter
Plus one: one-inch larger rims
A larger rim and a different tire profile can keep overall diameter close. The rim change alone does not determine tire height.
- 185/65R15 vs 205/55R16+1.67% diameter
- 185/70R14 vs 195/60R15+0.07% diameter
- 195/60R15 vs 195/55R16+0.96% diameter
- 195/60R15 vs 205/50R16-0.59% diameter
- 195/60R15 vs 205/55R16+2.75% diameter
- 195/65R15 vs 205/55R16-0.41% diameter
- 205/55R16 vs 205/50R17+0.78% diameter
- 205/55R16 vs 215/45R17-1.04% diameter
- 205/55R16 vs 225/45R17+0.38% diameter
- 205/60R16 vs 215/50R17-0.86% diameter
- 205/60R16 vs 225/50R17+0.67% diameter
- 205/60R16 vs 245/45R17-0.02% diameter
- 205/65R15 vs 205/55R16-2.41% diameter
- 205/65R15 vs 205/60R16+0.76% diameter
- 205/65R15 vs 215/55R16-0.71% diameter
- 205/65R15 vs 215/60R16+2.61% diameter
- 205/70R15 vs 215/60R16-0.54% diameter
- 205/70R15 vs 225/60R16+1.26% diameter
- 205/75R15 vs 215/65R16-0.38% diameter
- 205/75R15 vs 225/60R16-1.76% diameter
- 205/75R15 vs 235/60R16-0.01% diameter
- 215/55R17 vs 245/45R18+1.41% diameter
- 215/60R16 vs 215/55R17+0.59% diameter
- 215/60R16 vs 225/50R17-1.14% diameter
- 215/65R15 vs 215/60R16+0.59% diameter
- 215/65R16 vs 225/55R17-0.96% diameter
- 215/65R16 vs 225/60R17+2.32% diameter
- 215/65R16 vs 235/55R17+0.64% diameter
- 215/70R15 vs 215/60R16-2.58% diameter
- 215/70R15 vs 215/65R16+0.57% diameter
- 215/70R15 vs 225/60R16-0.82% diameter
- 215/70R15 vs 235/60R16+0.94% diameter
- 215/70R16 vs 225/60R17-0.79% diameter
- 225/45R17 vs 225/40R18+0.46% diameter
- 225/45R17 vs 245/40R18+2.98% diameter
- 225/50R17 vs 225/45R18+0.44% diameter
- 225/50R17 vs 245/40R18-0.55% diameter
- 225/50R18 vs 245/40R19-0.53% diameter
- 225/55R17 vs 245/45R18-0.24% diameter
- 225/60R16 vs 215/55R17-1.20% diameter
- 225/60R16 vs 225/55R17+0.43% diameter
- 225/65R16 vs 225/60R17+0.41% diameter
- 225/75R15 vs 225/70R16+0.40% diameter
- 225/75R15 vs 235/65R16-0.92% diameter
- 225/75R15 vs 235/70R16+2.35% diameter
- 225/75R16 vs 225/65R17-2.63% diameter
- 225/75R16 vs 235/65R17-0.89% diameter
- 225/75R16 vs 245/65R17+0.86% diameter
- 235/50R18 vs 245/40R19-1.96% diameter
- 235/55R17 vs 245/45R18-1.83% diameter
- 235/65R17 vs 235/60R18+0.26% diameter
- 235/70R16 vs 225/65R17-1.51% diameter
- 235/70R16 vs 235/65R17+0.26% diameter
- 235/75R15 vs 225/70R16-1.65% diameter
- 235/75R15 vs 235/70R16+0.26% diameter
- 235/75R15 vs 245/70R16+2.17% diameter
- 235/80R16 vs 245/70R17-0.97% diameter
- 235/80R16 vs 255/70R17+0.82% diameter
- 235/80R16 vs 265/65R17-0.78% diameter
- 235/80R16 vs 265/70R17+2.61% diameter
- 235/85R16 vs 235/80R17+0.24% diameter
- 235/85R16 vs 245/75R17-0.82% diameter
- 235/85R16 vs 255/75R17+1.04% diameter
- 235/85R16 vs 265/70R17-0.38% diameter
- 245/45R18 vs 245/40R19+0.13% diameter
- 245/45R20 vs 245/40R21+0.12% diameter
- 245/70R16 vs 235/65R17-1.61% diameter
- 245/75R16 vs 245/70R17+0.12% diameter
- 245/75R16 vs 265/65R17+0.31% diameter
- 245/75R16 vs 275/60R17-1.56% diameter
- 255/40R21 vs 255/35R22-0.01% diameter
- 255/45R20 vs 255/40R21-0.01% diameter
- 265/40R20 vs 265/35R21-0.15% diameter
- 265/70R16 vs 255/65R17-1.81% diameter
- 265/70R16 vs 265/65R17-0.14% diameter
- 265/70R16 vs 275/60R17-2.01% diameter
- 265/70R17 vs 265/65R18-0.14% diameter
- 265/70R17 vs 275/65R18+1.48% diameter
- 265/75R15 vs 265/70R16-0.14% diameter
- 265/75R16 vs 255/70R17-1.88% diameter
- 265/75R16 vs 265/70R17-0.14% diameter
- 275/40R20 vs 275/35R21-0.29% diameter
- 285/35R21 vs 285/30R22-0.42% diameter
- 285/40R20 vs 285/35R21-0.42% diameter
Plus two: two-inch larger rims
Compare the nominal dimensions before considering the separate load, wheel, and clearance requirements.
- 195/60R15 vs 215/45R17+1.67% diameter
- 195/65R15 vs 205/50R17+0.36% diameter
- 195/65R15 vs 225/45R17-0.03% diameter
- 205/60R16 vs 245/40R18+0.12% diameter
- 205/65R15 vs 215/50R17-0.11% diameter
- 205/65R15 vs 235/45R17-0.65% diameter
- 205/75R14 vs 215/60R16+0.20% diameter
- 215/55R17 vs 245/40R19+1.54% diameter
- 215/60R16 vs 245/45R18+2.00% diameter
- 215/65R16 vs 245/45R18-1.20% diameter
- 215/70R15 vs 225/55R17-0.40% diameter
- 215/75R15 vs 225/60R17-0.24% diameter
- 225/55R17 vs 245/40R19-0.10% diameter
- 225/60R16 vs 245/45R18+0.19% diameter
- 225/75R15 vs 225/60R17-2.32% diameter
- 225/75R15 vs 225/65R17+0.81% diameter
- 225/75R16 vs 235/60R18-0.63% diameter
- 235/55R17 vs 245/40R19-1.69% diameter
- 235/75R15 vs 225/65R17-1.25% diameter
- 235/75R15 vs 235/65R17+0.52% diameter
- 235/85R16 vs 255/70R18+1.03% diameter
- 235/85R16 vs 265/65R18-0.52% diameter
- 235/85R16 vs 275/65R18+1.09% diameter
- 245/75R16 vs 265/60R18+0.17% diameter
- 255/45R20 vs 255/35R22-0.03% diameter
- 265/70R16 vs 265/60R18-0.28% diameter
- 265/75R16 vs 255/65R18-1.89% diameter
- 265/75R16 vs 265/65R18-0.27% diameter
- 265/75R16 vs 275/65R18+1.34% diameter
The catalog includes selected coherent comparisons within a 3% nominal diameter band. That editorial limit is not a universal allowance for a vehicle. Read how comparisons are selected.