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255/50 R21 vs 315/40 R21 tyre size

What is the difference between 255/50 r21 and 315/40 r21 tyre size?

255/50 r21 and 315/40 r21 Data for 255/50-21 Data for 315/40-21 255 50 r21 anstatt 315 40 r21
Diameter 788.4 785.4 -3 / -0.4%
Width inches 255 315 60 / 23.5%
Circum. inches 2476.83 2467.41 -9.42 / -0.4%
Sidewall Height 127.5 126 -1.5 / -1.2%
Revolutions per km 403.74 405.28 1.54 / 0.4%

How much bigger is one type of tyre and can I use 255/50 r21 instead of 315/40 r21?

Speed on the speedometer Actual speed
32.19 km/h 32.06 km/h
40.23 km/h 40.08 km/h
48.28 km/h 48.1 km/h
56.33 km/h 56.11 km/h
64.37 km/h 64.13 km/h
72.42 km/h 72.15 km/h
80.47 km/h 80.16 km/h
88.51 km/h 88.18 km/h
96.56 km/h 96.19 km/h
104.61 km/h 104.21 km/h
112.65 km/h 112.23 km/h
120.7 km/h 120.24 km/h
128.75 km/h 128.26 km/h
136.79 km/h 136.27 km/h
144.84 km/h 144.29 km/h
152.89 km/h 152.31 km/h
160.93 km/h 160.32 km/h
Manufacturers
500 items
Gripmax SUREGRIP PRO SPORT XL TL 315/40 R21 115Y XL Summer tyres
EAN: 8859291438274 MPN: 221023669
Submit a review
  • Rolling resistance coefficient ) C
  • The best grip of tyre ) A
  • Noise emission level B ) 75dB
  • Season: Summer tyres
  • Tyre size: 315 40 R21
  • Load index: 115 = to 1215 kg
  • Speed rating: Y = to 300 km/h
  • Extra Load / Reinforced: XL
  • Type: Passenger car
  • C-type No
  • Run-Flat Tyres No
  • Rim protection No
  • M+S: No
Details
Free delivery on this item
In stock
£ 150,14
Price per item

price incl. 20% VAT

free delivery

Nankang SV-3 Winter 315/40 R21 115V XL Winter tyres
EAN: 4717622052350 MPN: JY184
Submit a review
  • Rolling resistance coefficient ) C
  • The best grip of tyre ) B
  • Noise emission level B ) 73dB
  • Winter
  • Season: Winter tyres
  • Alpine Symbol (3PMSF): Yes
  • Tyre size: 315 40 R21
  • Load index: 115 = to 1215 kg
  • Speed rating: V = to 240 km/h
  • Extra Load / Reinforced: XL
  • Rim protection: Yes
  • M+S: Yes
  • Type: Passenger car
  • C-type No
  • Run-Flat Tyres No
Details
Free delivery on this item
In stock
£ 173,35
Price per item

price incl. 20% VAT

free delivery

Goodyear Eagle Touring 255/50 R21 109H XL Summer tyres
EAN: 4038526020673 MPN: 576113
Submit a review
  • Rolling resistance coefficient ) B
  • The best grip of tyre ) B
  • Noise emission level B ) 71dB
  • Season: Summer tyres
  • Tyre size: 255 50 R21
  • Load index: 109 = to 1030 kg
  • Speed rating: H = to 210 km/h
  • Extra Load / Reinforced: XL
  • M+S: Yes
  • Type: Passenger car
  • C-type No
  • Rim protection No
Details
Free delivery on this item
In stock (Item(s) left: 10)
£ 205,10
Price per item

price incl. 20% VAT

free delivery

Hankook Winter i*cept evo3 W330 255/50 R21 109H XL Winter tyres
EAN: 8808563478739 MPN: 1026300
Reviews - 1
  • Rolling resistance coefficient ) C
  • The best grip of tyre ) B
  • Noise emission level B ) 73dB
  • Winter
  • Season: Winter tyres
  • Alpine Symbol (3PMSF): Yes
  • Tyre size: 255 50 R21
  • Load index: 109 = to 1030 kg
  • Speed rating: H = to 210 km/h
  • Extra Load / Reinforced: XL
  • Rim protection: Yes
  • M+S: Yes
  • Type: Passenger car
  • C-type No
  • Run-Flat Tyres No
Details
Free delivery on this item
In stock
-34%
compared to RRP £ 330,12

£ 216,91
Price per item

price incl. 20% VAT

free delivery

Goodyear UltraGrip Performance+ 255/50 R21 109H XL Winter tyres
EAN: 5452000831675 MPN: 574434
Submit a review
  • Rolling resistance coefficient ) B
  • The best grip of tyre ) B
  • Noise emission level B ) 72dB
  • Winter
  • Season: Winter tyres
  • Alpine Symbol (3PMSF): Yes
  • Tyre size: 255 50 R21
  • Load index: 109 = to 1030 kg
  • Speed rating: H = to 210 km/h
  • Extra Load / Reinforced: XL
  • M+S: Yes
  • Type: Passenger car
  • C-type No
  • Run-Flat Tyres No
  • Rim protection No
Details
Free delivery on this item
In stock (Item(s) left: 4)
-51%
compared to RRP £ 482,40

£ 233,93
Price per item

price incl. 20% VAT

free delivery

Goodyear UltraGrip Performance + 255/50 R21 109H XL Winter tyres
EAN: 4038526350305 MPN: 587881
Submit a review
  • Rolling resistance coefficient ) B
  • The best grip of tyre ) B
  • Noise emission level B ) 72dB
  • Winter
  • Season: Winter tyres
  • Alpine Symbol (3PMSF): Yes
  • Tyre size: 255 50 R21
  • Load index: 109 = to 1030 kg
  • Speed rating: H = to 210 km/h
  • Run-Flat Tyres: Yes
  • Extra Load / Reinforced: XL
  • M+S: Yes
  • Type: Passenger car
  • C-type No
  • Rim protection No
Details
Free delivery on this item
In stock (Item(s) left: 8)
-54%
compared to RRP £ 531,60

£ 244,49
Price per item

price incl. 20% VAT

free delivery

Vredestein WINTRAC PRO XL FP M 315/40 R21 115V XL 4x4 winter tyres
EAN: 8714692352515 MPN: AP31540021VWPRA02
Submit a review
  • Rolling resistance coefficient ) C
  • The best grip of tyre ) B
  • Noise emission level B ) 73dB
  • Winter
  • Season: Winter tyres
  • Alpine Symbol (3PMSF): Yes
  • Tyre size: 315 40 R21
  • Load index: 115 = to 1215 kg
  • Speed rating: V = to 240 km/h
  • Extra Load / Reinforced: XL
  • Rim protection: Yes
  • M+S: Yes
  • Type: 4x4 tyres
  • C-type No
  • Run-Flat Tyres No
Details
Free delivery on this item
In stock
-44%
compared to RRP £ 447,60

£ 249,68
Price per item

price incl. 20% VAT

free delivery

Yokohama Advan Sport (V107E) 315/40 R21 115Y XL Summer tyres
EAN: 4548515009461 MPN: R6753
Submit a review
  • Rolling resistance coefficient ) D
  • The best grip of tyre ) B
  • Noise emission level A ) 70dB
  • Season: Summer tyres
  • Tyre size: 315 40 R21
  • Load index: 115 = to 1215 kg
  • Speed rating: Y = to 300 km/h
  • Extra Load / Reinforced: XL
  • Type: Passenger car
  • C-type No
  • Rim protection No
  • M+S: No
Details
Free delivery on this item
In stock
-47%
compared to RRP £ 484,32

£ 255,15
Price per item

price incl. 20% VAT

free delivery

Yokohama BluEarth-Winter (V906) 315/40 R21 115W XL Winter tyres
EAN: 4548515317870 MPN: R9549
Submit a review
  • Rolling resistance coefficient ) C
  • The best grip of tyre ) B
  • Noise emission level B ) 74dB
  • Winter
  • Season: Winter tyres
  • Alpine Symbol (3PMSF): Yes
  • Tyre size: 315 40 R21
  • Load index: 115 = to 1215 kg
  • Speed rating: W = to 270 km/h
  • Extra Load / Reinforced: XL
  • Rim protection: Yes
  • M+S: Yes
  • Type: Passenger car
  • C-type No
  • Run-Flat Tyres No
Details
Free delivery on this item
In stock
-48%
compared to RRP £ 496,69

£ 256,04
Price per item

price incl. 20% VAT

free delivery

Pirelli P ZERO 315/40 R21 111Y SUV summer tyres
EAN: 8019227270983 MPN: 2709800
Submit a review
  • Rolling resistance coefficient ) C
  • The best grip of tyre ) A
  • Noise emission level A ) 71dB
  • Season: Summer tyres
  • Tyre size: 315 40 R21
  • Load index: 111 = to 1090 kg
  • Speed rating: Y = to 300 km/h
  • Type: 4x4 tyres
  • C-type No
  • Run-Flat Tyres No
  • Extra Load / Reinforced No
  • Rim protection No
  • M+S: No
Details
Free delivery on this item
In stock
-53%
compared to RRP £ 556,46

£ 259,92
Price per item

price incl. 20% VAT

free delivery

Michelin Pilot Sport EV 255/50 R21 109Y XL Summer tyres
EAN: 3528708311862 MPN: 831186
Submit a review
  • Rolling resistance coefficient ) A
  • The best grip of tyre ) B
  • Noise emission level B ) 72dB
  • Season: Summer tyres
  • Tyre size: 255 50 R21
  • Load index: 109 = to 1030 kg
  • Speed rating: Y = to 300 km/h
  • Extra Load / Reinforced: XL
  • Rim protection: Yes
  • Type: Passenger car
  • C-type No
  • Run-Flat Tyres No
  • M+S: No
Details
Free delivery on this item
In stock
-23%
compared to RRP £ 343,99

£ 264,28
Price per item

price incl. 20% VAT

free delivery

Bridgestone Turanza 6 315/40 R21 111Y SUV summer tyres
EAN: 3286342607313 MPN: 26073
Submit a review
  • Rolling resistance coefficient ) B
  • The best grip of tyre ) A
  • Noise emission level B ) 72dB
  • Season: Summer tyres
  • Tyre size: 315 40 R21
  • Load index: 111 = to 1090 kg
  • Speed rating: Y = to 300 km/h
  • Rim protection: Yes
  • Type: 4x4 tyres
  • Extra Load / Reinforced No
  • Run-Flat Tyres No
  • M+S: No
Details
Free delivery on this item
In stock
-35%
compared to RRP £ 420,43

£ 269,42
Price per item

price incl. 20% VAT

free delivery

Pirelli PZERO (PZ5) FP MO TL 315/40 R21 111Y SUV summer tyres
EAN: 8019227426199 MPN: 4261900
Submit a review
  • Rolling resistance coefficient ) B
  • The best grip of tyre ) A
  • Noise emission level A ) 71dB
  • Season: Summer tyres
  • Tyre size: 315 40 R21
  • Load index: 111 = to 1090 kg
  • Speed rating: Y = to 300 km/h
  • Rim protection: Yes
  • Type: 4x4 tyres
  • Extra Load / Reinforced No
  • Run-Flat Tyres No
  • M+S: No
Details
Free delivery on this item
In stock
£ 274,06
Price per item

price incl. 20% VAT

free delivery

Hankook Winter i*cept evo3 X W330A 315/40 R21 115V XL 4x4 winter tyres
EAN: 8808563515717 MPN: 1027232
Submit a review
  • Rolling resistance coefficient ) C
  • The best grip of tyre ) B
  • Noise emission level B ) 75dB
  • Winter
  • Season: Winter tyres
  • Alpine Symbol (3PMSF): Yes
  • Tyre size: 315 40 R21
  • Load index: 115 = to 1215 kg
  • Speed rating: V = to 240 km/h
  • Extra Load / Reinforced: XL
  • Rim protection: Yes
  • M+S: Yes
  • Type: 4x4 tyres
  • C-type No
  • Run-Flat Tyres No
Details
Free delivery on this item
In stock
-36%
compared to RRP £ 435,24

£ 275,15
Price per item

price incl. 20% VAT

free delivery

Pirelli P ZERO 315/40 R21 111Y SUV summer tyres
EAN: 8019227357295 MPN: 3572900
Submit a review
  • Rolling resistance coefficient ) C
  • The best grip of tyre ) A
  • Noise emission level A ) 71dB
  • Season: Summer tyres
  • Tyre size: 315 40 R21
  • Load index: 111 = to 1090 kg
  • Speed rating: Y = to 300 km/h
  • Type: 4x4 tyres
  • C-type No
  • Run-Flat Tyres No
  • Extra Load / Reinforced No
  • Rim protection No
  • M+S: No
Details
Free delivery on this item
In stock
£ 277,40
Price per item

price incl. 20% VAT

free delivery

Bridgestone ALENZA 001 * XL 255/50 R21 109Y XL Summer tyres
EAN: 3286341797510 MPN: 17975
Submit a review
  • Rolling resistance coefficient ) A
  • The best grip of tyre ) A
  • Noise emission level A ) 68dB
  • Season: Summer tyres
  • Tyre size: 255 50 R21
  • Load index: 109 = to 1030 kg
  • Speed rating: Y = to 300 km/h
  • Extra Load / Reinforced: XL
  • Type: Passenger car
  • C-type No
  • Run-Flat Tyres No
  • Rim protection No
  • M+S: No
Details
Free delivery on this item
In stock (Item(s) left: 4)
-30%
compared to RRP £ 403,95

£ 278,90
Price per item

price incl. 20% VAT

free delivery

Bridgestone BLIZZ6XL 255/50 R21 109W XL Winter tyres
EAN: 3286342892818 MPN: 28928
Submit a review
  • Rolling resistance coefficient ) B
  • The best grip of tyre ) B
  • Noise emission level B ) 72dB
  • Winter
  • Season: Winter tyres
  • Alpine Symbol (3PMSF): Yes
  • Tyre size: 255 50 R21
  • Load index: 109 = to 1030 kg
  • Speed rating: W = to 270 km/h
  • Extra Load / Reinforced: XL
  • M+S: Yes
  • Type: Passenger car
  • C-type No
  • Run-Flat Tyres No
  • Rim protection No
Details
Free delivery on this item
In stock
-50%
compared to RRP £ 568,82

£ 282,19
Price per item

price incl. 20% VAT

free delivery

Bridgestone Alenza 001 255/50 R21 109Y Summer tyres
EAN: 3286343095911 MPN: 30959
Submit a review
  • Rolling resistance coefficient ) A
  • The best grip of tyre ) A
  • Noise emission level A ) 68dB
  • Season: Summer tyres
  • Tyre size: 255 50 R21
  • Load index: 109 = to 1030 kg
  • Speed rating: Y = to 300 km/h
  • Type: Passenger car
  • Rim protection No
  • M+S: No
Details
Free delivery on this item
In stock
£ 284,32
Price per item

price incl. 20% VAT

free delivery

Hankook iON i*cept SUV IW01A 255/50 R21 109V XL 4x4 winter tyres
EAN: 8808563587936 MPN: 1032885
Submit a review
  • Rolling resistance coefficient ) C
  • The best grip of tyre ) B
  • Noise emission level A ) 70dB
  • Winter
  • Season: Winter tyres
  • Alpine Symbol (3PMSF): Yes
  • Tyre size: 255 50 R21
  • Load index: 109 = to 1030 kg
  • Speed rating: V = to 240 km/h
  • Extra Load / Reinforced: XL
  • Rim protection: Yes
  • M+S: Yes
  • Type: 4x4 tyres
  • C-type No
  • Run-Flat Tyres No
Details
Free delivery on this item
In stock (Item(s) left: 8)
-34%
compared to RRP £ 451,80

£ 295,49
Price per item

price incl. 20% VAT

free delivery

Pirelli PZERO (PZ5) PNCS FP MO-S TL 315/40 R21 111Y SUV summer tyres
EAN: 8019227426236 MPN: 4262300
Submit a review
  • Rolling resistance coefficient ) C
  • The best grip of tyre ) A
  • Noise emission level A ) 71dB
  • Season: Summer tyres
  • Tyre size: 315 40 R21
  • Load index: 111 = to 1090 kg
  • Speed rating: Y = to 300 km/h
  • Rim protection: Yes
  • Type: 4x4 tyres
  • Extra Load / Reinforced No
  • Run-Flat Tyres No
  • M+S: No
Details
Free delivery on this item
In stock
£ 297,51
Price per item

price incl. 20% VAT

free delivery

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