Tyre size calculator

255
45
18

Equivalent sizes for the 255/45 R18 tyre

Sidewall height 115 mmDiameter 687 mm Circumference 2157 mmRevolutions/km 464

Approved rim widths according to ETRTO: 8,5" – 8" – 9" – 9,5"

To be approved, a tyre's diameter may differ by no more than 2 %. The vehicle's load and speed indices must also be respected.

Tyre size equivalents

17″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
245/50 R17 -1.44 % 98.6 km/h 7,5" – 7" – 8" – 8,5" —
225/55 R17 -1.11 % 98.9 km/h —
TracmaxHankookYokohama 86 models in stockFrom CHF 75.90 Summer30 Winter28 All-season28
235/55 R17 +0.52 % 100.5 km/h —
TracmaxYokohamaFirestone 53 models in stockFrom CHF 76.90 Summer21 Winter17 All-season15

18″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
275/40 R18 -1.41 % 98.6 km/h 9,5" – 9" – 10" – 10,5" – 11"
MaxxisKleberBridgestone 13 models in stockFrom CHF 178.00 Summer2 Winter9 All-season2
245/45 R18 -1.33 % 98.7 km/h 8" – 7,5" – 8,5" – 9"
TracmaxHankookContinental 54 models in stockFrom CHF 78.90 Summer18 Winter20 All-season16
225/50 R18 -0.67 % 99.3 km/h 7" – 6" – 6,5" – 7,5" – 8"
TracmaxNexenYokohama 40 models in stockFrom CHF 75.90 Summer11 Winter18 All-season11
255/45 R18 Your size 0 % 100.0 km/h 8,5" – 8" – 9" – 9,5"
TracmaxHankookLandspider 26 models in stockFrom CHF 78.90 Summer10 Winter9 All-season7
235/50 R18 +0.78 % 100.8 km/h 7,5" – 6,5" – 7" – 8" – 8,5"
TracmaxContinentalNexen 45 models in stockFrom CHF 78.90 Summer21 Winter11 All-season13
265/45 R18 +1.29 % 101.3 km/h 9" – 8,5" – 9,5" – 10"
Hankook 1 model in stockFrom CHF 168.00 Winter1

19″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
275/35 R19 -1.70 % 98.3 km/h 9,5" – 9" – 10" – 10,5" – 11"
HankookMichelinTracmax 35 models in stockFrom CHF 92.90 Summer15 Winter13 All-season7
245/40 R19 -1.18 % 98.8 km/h 8,5" – 8" – 9" – 9,5"
TracmaxLandspiderHankook 45 models in stockFrom CHF 81.90 Summer16 Winter17 All-season12
285/35 R19 -0.70 % 99.3 km/h 10" – 9,5" – 10,5" – 11"
FalkenHankookPirelli 3 models in stockFrom CHF 196.00 Summer2 Winter1
225/45 R19 -0.26 % 99.7 km/h 7,5" – 7" – 8" – 8,5"
TracmaxNexenLandspider 38 models in stockFrom CHF 75.90 Summer13 Winter9 All-season16
255/40 R19 -0.04 % 100.0 km/h 9" – 8,5" – 9,5" – 10"
TracmaxAtturoLandspider 43 models in stockFrom CHF 79.90 Summer17 Winter12 All-season14
235/45 R19 +1.07 % 101.1 km/h 8" – 7,5" – 8,5" – 9"
TracmaxFalkenMichelin 33 models in stockFrom CHF 84.90 Summer7 Winter13 All-season13
265/40 R19 +1.15 % 101.2 km/h 9,5" – 9" – 10" – 10,5"
HankookYokohamaFalken 12 models in stockFrom CHF 146.00 Summer4 Winter7 All-season1

20″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
275/30 R20 -2.00 % 98.0 km/h 9,5" – 9" – 10"
HankookNexenContinental 18 models in stockFrom CHF 174.00 Summer9 Winter6 All-season3
285/30 R20 -1.15 % 98.9 km/h 10" – 9,5" – 10,5"
VredesteinContinentalMichelin 3 models in stockFrom CHF 225.00 Summer1 Winter2
245/35 R20 -1.07 % 98.9 km/h 8,5" – 8" – 9" – 9,5"
TracmaxHankookLandspider 31 models in stockFrom CHF 81.90 Summer14 Winter9 All-season8
255/35 R20 -0.04 % 100.0 km/h 9" – 8,5" – 9,5" – 10"
TracmaxPirelliVredestein 27 models in stockFrom CHF 81.90 Summer11 Winter9 All-season7
265/35 R20 +0.96 % 101.0 km/h 9,5" – 9" – 10" – 10,5"
PirelliKumhoNexen 18 models in stockFrom CHF 177.00 Summer11 Winter7
275/35 R20 +2.00 % 102.0 km/h 9,5" – 9" – 10" – 10,5" – 11"
LandspiderHankookContinental 26 models in stockFrom CHF 90.90 Summer14 Winter11 All-season1

21″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
245/30 R21 -0.92 % 99.1 km/h 8,5" – 8" – 9" —
255/30 R21 -0.07 % 99.9 km/h 9" – 8,5" – 9,5"
Goodyear 1 model in stockFrom CHF 327.00 Summer1
265/30 R21 +0.81 % 100.8 km/h 9,5" – 9" – 10" —

22″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
235/30 R22 +1.89 % 101.9 km/h 8,5" —

Sizes equivalent to 255/45 R18:

245/50 R17225/55 R17235/55 R17275/40 R18245/45 R18225/50 R18235/50 R18265/45 R18275/35 R19245/40 R19285/35 R19225/45 R19255/40 R19235/45 R19265/40 R19275/30 R20285/30 R20245/35 R20255/35 R20265/35 R20275/35 R20245/30 R21255/30 R21265/30 R21

255/45 R18 tyres in stock

View all 26 255/45 R18 tyres ›
Tracmax X Privilo S330Winter tyresTracmaxX Privilo S330 103VFrom CHF 79.90Hankook Winter icept evo3 W330Winter tyresHankookWinter icept evo3 W330 103VFrom CHF 190.00Landspider Sportraxx UHPSummer tyresLandspiderSportraxx UHP 103YFrom CHF 78.90Kumho Ecsta Sport PS72Summer tyresKumhoEcsta Sport PS72 103YFrom CHF 127.00
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This information is provided for guidance only and does not engage Rupteur's liability in any way.