Tyre size calculator

235
40
18

Equivalent sizes for the 235/40 R18 tyre

Sidewall height 94 mmDiameter 645 mm Circumference 2027 mmRevolutions/km 493

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
225/45 R17 -1.69 % 98.3 km/h 7,5" – 7" – 8" – 8,5"
TracmaxBridgestoneLaufenn 71 models in stockFrom CHF 66.90 Summer26 Winter24 All-season21
255/40 R17 -1.46 % 98.5 km/h 9" – 8,5" – 9,5" – 10" —
205/50 R17 -1.30 % 98.7 km/h 6,5" – 5,5" – 6" – 7" – 7,5"
TracmaxHankookKleber 50 models in stockFrom CHF 66.90 Summer19 Winter17 All-season14
235/45 R17 -0.28 % 99.7 km/h 8" – 7,5" – 8,5" – 9"
TracmaxLaufennKleber 43 models in stockFrom CHF 69.90 Summer14 Winter12 All-season17
265/40 R17 -0.20 % 99.8 km/h 9,5" – 9" – 10" – 10,5" —
215/50 R17 +0.24 % 100.2 km/h 7" – 6" – 6,5" – 7,5"
TracmaxHankookDunlop 50 models in stockFrom CHF 71.90 Summer17 Winter15 All-season18
245/45 R17 +1.10 % 101.1 km/h 8" – 7,5" – 8,5" – 9"
TracmaxDunlopBridgestone 31 models in stockFrom CHF 71.90 Summer6 Winter14 All-season11
225/50 R17 +1.81 % 101.8 km/h 7" – 6" – 6,5" – 7,5" – 8"
YokohamaContinentalTracmax 91 models in stockFrom CHF 72.90 Summer34 Winter35 All-season22
205/55 R17 +1.89 % 101.9 km/h —
TracmaxBridgestoneLaufenn 37 models in stockFrom CHF 69.90 Summer8 Winter16 All-season13

18″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
255/35 R18 -1.46 % 98.5 km/h 9" – 8,5" – 9,5" – 10"
NexenContinentalLaufenn 21 models in stockFrom CHF 112.00 Summer9 Winter5 All-season7
225/40 R18 -1.22 % 98.8 km/h 8" – 7,5" – 8,5" – 9"
TracmaxLaufennPirelli 48 models in stockFrom CHF 69.90 Summer5 Winter24 All-season19
205/45 R18 -0.55 % 99.5 km/h 7" – 6,5" – 7,5"
FalkenBridgestoneContinental 3 models in stockFrom CHF 134.00 Winter3
265/35 R18 -0.39 % 99.6 km/h 9,5" – 9" – 10" – 10,5"
MaxxisLaufennHankook 14 models in stockFrom CHF 127.00 Summer9 Winter4 All-season1
235/40 R18 Your size 0 % 100.0 km/h 8,5" – 8" – 9" – 9,5"
TracmaxUniroyalYokohama 50 models in stockFrom CHF 69.90 Summer16 Winter18 All-season16
215/45 R18 +0.87 % 100.9 km/h 7" – 7,5" – 8"
TracmaxKumhoUniroyal 32 models in stockFrom CHF 68.90 Summer11 Winter10 All-season11
245/40 R18 +1.26 % 101.3 km/h 8,5" – 8" – 9" – 9,5"
TracmaxHankookContinental 57 models in stockFrom CHF 75.90 Summer17 Winter21 All-season19

19″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
215/35 R19 -1.85 % 98.2 km/h 7,5" – 7" – 8" – 8,5" —
255/30 R19 -1.50 % 98.5 km/h 9" – 8,5" – 9,5"
YokohamaLaufennHankook 11 models in stockFrom CHF 148.00 Summer11
225/35 R19 -0.79 % 99.2 km/h 8" – 7,5" – 8,5" – 9"
HankookTracmaxPirelli 20 models in stockFrom CHF 74.90 Summer10 Winter4 All-season6
265/30 R19 -0.55 % 99.5 km/h 9,5" – 9" – 10"
HankookGoodyear 2 models in stockFrom CHF 172.00 Summer2
235/35 R19 +0.31 % 100.3 km/h 8,5" – 8" – 9" – 9,5"
TracmaxPirelliBridgestone 40 models in stockFrom CHF 75.90 Summer16 Winter11 All-season13
245/35 R19 +1.38 % 101.4 km/h 8,5" – 8" – 9" – 9,5"
TracmaxLandspiderHankook 36 models in stockFrom CHF 72.90 Summer12 Winter12 All-season12

20″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
265/25 R20 -0.71 % 99.3 km/h — —
225/30 R20 -0.35 % 99.7 km/h 8" —
235/30 R20 +0.59 % 100.6 km/h 8,5"
KumhoFalkenGoodyear 4 models in stockFrom CHF 162.00 Summer4
245/30 R20 +1.54 % 101.5 km/h 8,5" – 8" – 9"
NexenLandspiderFirestone 9 models in stockFrom CHF 76.90 Summer6 Winter3

Sizes equivalent to 235/40 R18:

225/45 R17255/40 R17205/50 R17235/45 R17265/40 R17215/50 R17245/45 R17225/50 R17205/55 R17255/35 R18225/40 R18205/45 R18265/35 R18215/45 R18245/40 R18215/35 R19255/30 R19225/35 R19265/30 R19235/35 R19245/35 R19265/25 R20225/30 R20235/30 R20

235/40 R18 tyres in stock

View all 50 235/40 R18 tyres ›
Tracmax Ice-Plus S210Winter tyresTracmaxIce-Plus S210 95VFrom CHF 72.90Uniroyal Rainsport 5Summer tyresUniroyalRainsport 5 95YFrom CHF 121.00Yokohama BluEarth Winter V905Winter tyresYokohamaBluEarth Winter V905 95WFrom CHF 130.00Pirelli P Zero PZ5Summer tyresPirelliP Zero PZ5 95YFrom CHF 137.00
🔥NewProKlick: discretion as a signature

This information is provided for guidance only and does not engage Rupteur's liability in any way.