18″ comparisons

18-inch tire comparisons

The most useful side-by-side comparisons involving 18-inch wheels — including same-rim width changes and plus-size upgrades. Each link shows diameter difference, speedometer drift and a fitment verdict. Open the speedometer calculator →

245/45 R18 vs 275/40 R18

Δ 0.07% • rim Δ 0

235/45 R18 vs 265/40 R18

Δ 0.07% • rim Δ 0

215/40 R18 vs 245/35 R18

Δ 0.08% • rim Δ 0

255/50 R19 vs 255/55 R18

Δ 0.01% • rim Δ 1

255/40 R19 vs 255/45 R18

Δ 0.01% • rim Δ 1

255/35 R19 vs 255/40 R18

Δ 0.02% • rim Δ 1

255/35 R18 vs 255/40 R17

Δ 0.02% • rim Δ 1

235/60 R18 vs 255/55 R18

Δ 0.20% • rim Δ 0

225/45 R18 vs 255/40 R18

Δ 0.23% • rim Δ 0

235/65 R17 vs 255/55 R18

Δ 0.05% • rim Δ 1

215/55 R17 vs 235/45 R18

Δ 0.06% • rim Δ 1

225/40 R18 vs 255/35 R18

Δ 0.24% • rim Δ 0

205/50 R17 vs 225/40 R18

Δ 0.06% • rim Δ 1

235/45 R18 vs 265/35 R19

Δ 0.09% • rim Δ 1

245/60 R18 vs 245/65 R17

Δ 0.12% • rim Δ 1

245/40 R19 vs 245/45 R18

Δ 0.13% • rim Δ 1

245/35 R19 vs 245/40 R18

Δ 0.14% • rim Δ 1

245/40 R18 vs 245/45 R17

Δ 0.14% • rim Δ 1

245/35 R18 vs 245/40 R17

Δ 0.14% • rim Δ 1

265/35 R19 vs 265/40 R18

Δ 0.16% • rim Δ 1

245/40 R19 vs 275/40 R18

Δ 0.21% • rim Δ 1

235/40 R19 vs 265/40 R18

Δ 0.21% • rim Δ 1

225/40 R19 vs 255/40 R18

Δ 0.21% • rim Δ 1

225/40 R18 vs 255/40 R17

Δ 0.22% • rim Δ 1

215/40 R18 vs 245/40 R17

Δ 0.22% • rim Δ 1

225/45 R19 vs 255/45 R18

Δ 0.23% • rim Δ 1

215/45 R18 vs 245/45 R17

Δ 0.25% • rim Δ 1

215/45 R18 vs 245/40 R18

Δ 0.38% • rim Δ 0

225/45 R18 vs 255/35 R19

Δ 0.21% • rim Δ 1

235/60 R18 vs 255/50 R19

Δ 0.22% • rim Δ 1

225/45 R17 vs 255/35 R18

Δ 0.22% • rim Δ 1

225/55 R18 vs 245/45 R19

Δ 0.23% • rim Δ 1

235/55 R19 vs 235/60 R18

Δ 0.26% • rim Δ 1

235/60 R18 vs 235/65 R17

Δ 0.26% • rim Δ 1

225/55 R17 vs 245/45 R18

Δ 0.24% • rim Δ 1

215/50 R17 vs 235/40 R18

Δ 0.25% • rim Δ 1

235/50 R18 vs 235/55 R17

Δ 0.28% • rim Δ 1

235/40 R19 vs 235/45 R18

Δ 0.28% • rim Δ 1

235/35 R19 vs 235/40 R18

Δ 0.29% • rim Δ 1

235/40 R18 vs 235/45 R17

Δ 0.30% • rim Δ 1

275/35 R19 vs 275/40 R18

Δ 0.31% • rim Δ 1

215/45 R18 vs 275/35 R18

Δ 0.15% • rim Δ 0

225/50 R18 vs 285/35 R19

Δ 0.01% • rim Δ 1

215/60 R17 vs 235/50 R18

Δ 0.35% • rim Δ 1

235/35 R19 vs 275/35 R18

Δ 0.40% • rim Δ 1

245/40 R18 vs 275/35 R18

Δ 0.54% • rim Δ 0

245/45 R18 vs 275/35 R19

Δ 0.38% • rim Δ 1

225/55 R18 vs 225/60 R17

Δ 0.41% • rim Δ 1

245/45 R17 vs 275/35 R18

Δ 0.40% • rim Δ 1

225/45 R19 vs 225/50 R18

Δ 0.43% • rim Δ 1

225/50 R18 vs 225/55 R17

Δ 0.43% • rim Δ 1

235/55 R19 vs 255/55 R18

Δ 0.46% • rim Δ 1

225/40 R19 vs 225/45 R18

Δ 0.44% • rim Δ 1

225/45 R18 vs 225/50 R17

Δ 0.44% • rim Δ 1

225/35 R19 vs 225/40 R18

Δ 0.46% • rim Δ 1

225/40 R18 vs 225/45 R17

Δ 0.46% • rim Δ 1

215/55 R17 vs 265/40 R18

Δ 0.13% • rim Δ 1

215/60 R17 vs 255/45 R18

Δ 0.45% • rim Δ 1

255/45 R20 vs 255/55 R18

Δ 0.03% • rim Δ 2

255/35 R20 vs 255/45 R18

Δ 0.03% • rim Δ 2

225/50 R18 vs 245/45 R18

Δ 0.66% • rim Δ 0

225/50 R18 vs 255/45 R18

Δ 0.66% • rim Δ 0

205/50 R17 vs 255/35 R18

Δ 0.17% • rim Δ 1

235/55 R18 vs 255/45 R19

Δ 0.50% • rim Δ 1

235/55 R17 vs 255/45 R18

Δ 0.52% • rim Δ 1

235/40 R18 vs 275/35 R18

Δ 0.70% • rim Δ 0

215/45 R18 vs 245/35 R19

Δ 0.52% • rim Δ 1

225/50 R18 vs 245/40 R19

Δ 0.53% • rim Δ 1

215/45 R17 vs 245/35 R18

Δ 0.54% • rim Δ 1

225/50 R17 vs 245/40 R18

Δ 0.55% • rim Δ 1

215/45 R18 vs 235/35 R19

Δ 0.55% • rim Δ 1

225/55 R18 vs 245/40 R20

Δ 0.10% • rim Δ 2

215/45 R18 vs 215/50 R17

Δ 0.60% • rim Δ 1

225/55 R16 vs 245/40 R18

Δ 0.11% • rim Δ 2

215/40 R18 vs 215/45 R17

Δ 0.62% • rim Δ 1

215/65 R16 vs 255/45 R18

Δ 0.12% • rim Δ 2

235/50 R18 vs 255/45 R18

Δ 0.79% • rim Δ 0

205/60 R16 vs 245/40 R18

Δ 0.12% • rim Δ 2

225/55 R18 vs 275/40 R19

Δ 0.30% • rim Δ 1

245/35 R19 vs 275/35 R18

Δ 0.68% • rim Δ 1

225/55 R17 vs 275/40 R18

Δ 0.31% • rim Δ 1

225/35 R19 vs 255/35 R18

Δ 0.69% • rim Δ 1

225/50 R18 vs 255/40 R19

Δ 0.64% • rim Δ 1

245/45 R18 vs 285/35 R19

Δ 0.65% • rim Δ 1

235/50 R18 vs 265/35 R20

Δ 0.19% • rim Δ 2

245/45 R18 vs 285/30 R20

Δ 0.19% • rim Δ 2

225/60 R16 vs 245/45 R18

Δ 0.19% • rim Δ 2

255/45 R18 vs 285/35 R19

Δ 0.67% • rim Δ 1

225/50 R17 vs 255/40 R18

Δ 0.67% • rim Δ 1

215/45 R18 vs 235/40 R18

Δ 0.85% • rim Δ 0

245/60 R18 vs 245/70 R16

Δ 0.24% • rim Δ 2

275/40 R18 vs 285/35 R19

Δ 0.72% • rim Δ 1

235/60 R18 vs 255/45 R20

Δ 0.23% • rim Δ 2

245/35 R20 vs 245/45 R18

Δ 0.27% • rim Δ 2

275/40 R18 vs 285/30 R20

Δ 0.27% • rim Δ 2

235/60 R16 vs 255/45 R18

Δ 0.25% • rim Δ 2

265/50 R20 vs 265/60 R18

Δ 0.28% • rim Δ 2

205/60 R16 vs 215/45 R18

Δ 0.26% • rim Δ 2

245/35 R20 vs 275/40 R18

Δ 0.34% • rim Δ 2

225/35 R19 vs 235/40 R18

Δ 0.79% • rim Δ 1

All comparison hubs →All 18″ tire sizes →