Tyre size calculator

255
40
18

Equivalent sizes for the 255/40 R18 tyre

Sidewall height 102 mmDiameter 661 mm Circumference 2077 mmRevolutions/km 481

Approved rim widths according to ETRTO: 9" – 8,5" – 9,5" – 10"

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
275/40 R17 -1.42 % 98.6 km/h 9,5" – 9" – 10" – 10,5" – 11" —
245/45 R17 -1.34 % 98.7 km/h 8" – 7,5" – 8,5" – 9"
TracmaxDunlopBridgestone 30 models in stockFrom CHF 71.90 Summer6 Winter13 All-season11
225/50 R17 -0.65 % 99.4 km/h 7" – 6" – 6,5" – 7,5" – 8"
YokohamaContinentalTracmax 90 models in stockFrom CHF 72.90 Summer34 Winter34 All-season22
255/45 R17 +0.04 % 100.0 km/h 8,5" – 8" – 9" – 9,5"
Continental 1 model in stockFrom CHF 321.00 Winter1
235/50 R17 +0.85 % 100.9 km/h 7,5" – 6,5" – 7" – 8" – 8,5"
KleberHankookTracmax 13 models in stockFrom CHF 74.90 Summer8 Winter3 All-season2

18″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
275/35 R18 -1.73 % 98.3 km/h 9,5" – 9" – 10" – 10,5" – 11"
PirelliNexenHankook 3 models in stockFrom CHF 148.00 Summer3
245/40 R18 -1.19 % 98.8 km/h 8,5" – 8" – 9" – 9,5"
TracmaxHankookContinental 56 models in stockFrom CHF 75.90 Summer17 Winter20 All-season19
285/35 R18 -0.69 % 99.3 km/h 10" – 9,5" – 10,5" – 11"
Bridgestone 1 model in stockFrom CHF 291.00 Summer1
225/45 R18 -0.23 % 99.8 km/h 7,5" – 7" – 8" – 8,5"
PirelliTracmaxHankook 67 models in stockFrom CHF 71.90 Summer20 Winter27 All-season20
255/40 R18 Your size 0 % 100.0 km/h 9" – 8,5" – 9,5" – 10"
ContinentalTracmaxHankook 25 models in stockFrom CHF 78.90 Summer11 Winter11 All-season3
235/45 R18 +1.15 % 101.2 km/h 8" – 7,5" – 8,5" – 9"
YokohamaKleberBridgestone 44 models in stockFrom CHF 75.90 Summer9 Winter20 All-season15
265/40 R18 +1.23 % 101.2 km/h 9,5" – 9" – 10" – 10,5"
NexenHankookContinental 4 models in stockFrom CHF 143.00 Summer2 Winter2

19″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
285/30 R19 -1.15 % 98.9 km/h 10" – 9,5" – 10,5"
LaufennYokohamaPirelli 9 models in stockFrom CHF 177.00 Summer7 Winter2
245/35 R19 -1.08 % 98.9 km/h 8,5" – 8" – 9" – 9,5"
TracmaxLandspiderHankook 36 models in stockFrom CHF 72.90 Summer12 Winter12 All-season12
255/35 R19 0 % 100.0 km/h 9" – 8,5" – 9,5" – 10"
TracmaxPirelliKleber 41 models in stockFrom CHF 81.90 Summer9 Winter16 All-season16
225/40 R19 +0.23 % 100.2 km/h 8" – 7,5" – 8,5" – 9"
TracmaxKleberPirelli 38 models in stockFrom CHF 76.90 Summer16 Winter15 All-season7
265/35 R19 +1.04 % 101.0 km/h 9,5" – 9" – 10" – 10,5"
MaxxisFirestoneHankook 14 models in stockFrom CHF 136.00 Summer8 Winter6
235/40 R19 +1.42 % 101.4 km/h 8,5" – 8" – 9" – 9,5"
LandspiderPirelliContinental 42 models in stockFrom CHF 76.90 Summer12 Winter17 All-season13

20″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
235/30 R20 -1.84 % 98.2 km/h 8,5"
KumhoFalkenGoodyear 4 models in stockFrom CHF 162.00 Summer4
285/25 R20 -1.61 % 98.4 km/h 10,5" —
245/30 R20 -0.92 % 99.1 km/h 8,5" – 8" – 9"
NexenLandspiderFirestone 9 models in stockFrom CHF 76.90 Summer6 Winter3
255/30 R20 -0.04 % 100.0 km/h 9" – 8,5" – 9,5"
YokohamaFalkenContinental 10 models in stockFrom CHF 78.90 Summer8 Winter2
225/35 R20 +0.65 % 100.7 km/h 8" – 7,5" – 8,5" – 9"
ContinentalHankookUniroyal 6 models in stockFrom CHF 159.00 Summer5 Winter1
265/30 R20 +0.88 % 100.9 km/h 9,5" – 9" – 10"
UniroyalContinentalVredestein 7 models in stockFrom CHF 205.00 Summer2 Winter5
235/35 R20 +1.73 % 101.7 km/h 8,5" – 8" – 9" – 9,5"
FirestoneNexenGoodyear 15 models in stockFrom CHF 172.00 Summer5 Winter9 All-season1
275/30 R20 +1.81 % 101.8 km/h 9,5" – 9" – 10"
HankookNexenContinental 18 models in stockFrom CHF 174.00 Summer9 Winter6 All-season3

Sizes equivalent to 255/40 R18:

275/40 R17245/45 R17225/50 R17255/45 R17235/50 R17275/35 R18245/40 R18285/35 R18225/45 R18235/45 R18265/40 R18285/30 R19245/35 R19255/35 R19225/40 R19265/35 R19235/40 R19235/30 R20285/25 R20245/30 R20255/30 R20225/35 R20265/30 R20235/35 R20

255/40 R18 tyres in stock

View all 25 255/40 R18 tyres ›
Continental WinterContact TS 830PWinter tyresContinentalWinterContact TS 830P 99VFrom CHF 215.00Tracmax X Privilo S330Winter tyresTracmaxX Privilo S330 99VFrom CHF 78.90Hankook Winter I*cept EVO 4 W340Winter tyresHankookWinter I*cept EVO 4 W340 99VFrom CHF 168.00Laufenn Z-Fit EQ LK03Summer tyresLaufennZ-Fit EQ LK03 99YFrom CHF 127.00
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This information is provided for guidance only and does not engage Rupteur's liability in any way.