The site is under going some updates, please bear with us while we finish them off.
Tyre Numbers
This is a discussion on Tyre Numbers within the Maintenance & Performance forums, part of the General Motoring Discussions category; The number measurements for tyres.....What do the mean? For example the furby vRS is 205/45/16 I know the 16 is ...
| |||||||
Pronounced "bris-skoda", a brisk skoda. | Register | FAQ | Members List | Calendar | Mark Forums Read |
21-12-2004, 15:46
| #1 |
| Briskodian  Join Date: Dec 2004 Location: nr Manchester
Posts: 835
Thanks: 0
Thanked 0 Times in 0 Posts
|  Tyre Numbers The number measurements for tyres.....What do the mean? For example the furby vRS is 205/45/16 I know the 16 is the size i.e. the diameter but whats the 45 and the 205? Does it matter (for example) If i put 205/40/16 on a furby? or does it have to be those exact measurements??? 
__________________ Alex Revo Chilly Alpine ICE Cupra Intake Green Cotton Filter RS6 wheels 184 BHP |
|    |
Find out about Freedom to remove these ads.
|
21-12-2004, 15:51
| #2 |
| Briskodian  Join Date: Jan 2003 Location: Rochdale
Posts: 12,390
Thanks: 2
Thanked 65 Times in 58 Posts
|  205 is the width of the tyre in mm. 45 represents the size of the sidewall, and is a percentage of the width (eg. 45%). So you have a width in mm, a profile size as a percentage, and a rim size in inches...  If you put 40s on, they'll be lower profile, so your overall rolling radius will be slower, which may put your speedo/odometer out. Rob.
__________________  |
|
| |
|
21-12-2004, 15:53
| #3 |
| ASZ Eternal  Join Date: Aug 2004 Location: Leafy Chesh-shire
Posts: 6,295
Thanks: 304
Thanked 305 Times in 263 Posts
| The 205 is the width of the tyre (in millimetres), and the 45 is the ratio of the depth of the sidewall to the width of the tyre (i.e. 205*0.45 = 92.25mm for the depth of the sidewall) As for the reason why there's a mixture of inches, millimetres and fraction, I don't know. The letter ('V' for example) is the speed rating - the later the letter is in the alphabet, the faster the tyre can safely go. So there you have it! 
__________________   |
|
| |
|
21-12-2004, 15:54
| #4 |
| ASZ Eternal Join Date: Aug 2004 Location: Leafy Chesh-shire
Posts: 6,295
Thanks: 304
Thanked 305 Times in 263 Posts
| Damn... you beat me to it!
__________________ |
|
| |
|
21-12-2004, 15:56
| #5 |
| Briskodian  Join Date: Oct 2003 Location: Woking
Posts: 6,609
Thanks: 1
Thanked 6 Times in 6 Posts
| The most important number to remember Eatsoot is 4 as this is the number of inflated tyres you should have. Any less that 4 and the Fabia handles like Vannessa Feltz in the Romanian Cluster position.
__________________ Rev. Andy The Rallying Reverend www.miniroadrunnerrallying.co.uk  No money for rallying makes Andy a dull boy |
|
| |
|
21-12-2004, 15:57
| #6 | |
| Briskodian Join Date: Jan 2003 Location: Rochdale
Posts: 12,390
Thanks: 2
Thanked 65 Times in 58 Posts
| Quote:
 Rob.
__________________ | |
|
| |
|
21-12-2004, 16:26
| #7 | |
| Briskodian  Join Date: Feb 2004 Location: Lincolnshire
Posts: 952
Thanks: 0
Thanked 0 Times in 0 Posts
| Quote:
Sure "Millimetric" rims had other benifits other than the fact they were measured in Metric size?
__________________ Dave | |
|
| |
|
21-12-2004, 19:36
| #8 |
| Briskodian  Join Date: Mar 2003 Location: Andover
Posts: 18,101
Thanks: 15
Thanked 323 Times in 281 Posts
| Interestingly H appears between U and V in the speed ratings And don't forget tyres also have a load rating. See here for more info  Chris
__________________ Holding up the traffic in a little Italian..........  |
|
| |
|
21-12-2004, 19:44
| #9 |
| Hairy Yeti  Join Date: Sep 2003 Location: Newport Pagnell
Posts: 21,403
Thanks: 19
Thanked 573 Times in 501 Posts
| Metro tyres were outrageously priced, iirc only a few makes to choose from. Dunlop were the main one who actually developed the wheel/tyre combo for BL...idiots.
__________________ Unit 18 now open Servicing, repairs, modifications you name it we do it. Cupra console bushes at special price, PM for a very competitive quote. |
|
| |
|
21-12-2004, 19:50
| #10 | |
| Fast old git  Join Date: Aug 2004 Location: Stirling
Posts: 2,747
Thanks: 23
Thanked 17 Times in 15 Posts
| Quote:
__________________ Alan "Darth" - Black Magic Octavia VRS with Forge DV, BMC CDA induction kit, Milltek cat, Supersprint exhaust, Xenons, ESP, cruise, parking sensors and Kumho 225/45/17 tyres Been to Star  sufficient bhp & ample lb/ft  All time low - 7.8 mpg | |
|
| |
|
21-12-2004, 19:52
| #11 |
| Briskodian  Join Date: Aug 2004 Location: North London
Posts: 1,204
Thanks: 0
Thanked 0 Times in 0 Posts
| Speed ratings Might be of use... Marking Charactistics Speed Symbol "N" For vehicles with a speed capability not exceeding 140 Km/h (88 Mph) Speed Symbol "P" For vehicles with a speed capability not exceeding 150 Km/h (94 Mph) Speed Symbol "Q" For vehicles with a speed capability not exceeding 160 Km/h (100 Mph) Speed Symbol "R" For vehicles with a speed capability not exceeding 170 Km/h (106 Mph) Speed Symbol "S" For vehicles with a speed capability not exceeding 180 Km/h (113 Mph) Speed Symbol "T" For vehicles with a speed capability not exceeding 190 Km/h (119 Mph) Speed Symbol "U" For vehicles with a speed capability not exceeding 200 Km/h (125 Mph) Speed Symbol "H" For vehicles with a speed capability not exceeding 210 Km/h (130 Mph) Speed Category "VR" For vehicles having speed capability over 210 Km/h (e.g. 195.50 VR 15) Speed Category "ZR" For vehicles with a speed capability over 240 Km/h (e.g. 205.40 ZR 17) Speed Symbol "V" For vehicles with a speed capability not exceeding 240 Km/h (e.g. 225.55 R 15 91V) Speed Symbol "W" For vehicles having speed capability not exceeding 270 Km/h (e.g. 225.60 R 15 96W) Speed Symbol "Y" For vehicles having speed capability not exceeding 300 Km/h (e.g. 275.40 R 18 94Y) ZR+ Speed Symbol "W" Tyres marked with both designations for vehicles with speed capability over 240 Km/h but not exceeding 270 Km/h ZR+ Speed Symbol "Y" Tyres marked with both designations for vehicles with speed capability over 240 Km/h but not exceeding 300 Km/h
__________________ Fabia has SOLD! Weekend car: Cooper Green TVR Chimaera Daily driver: Carmine Red Vauxhall Omega... 2.0 LS... Auto... Estate... with towbar & drinking problem |
|
| |
|
21-12-2004, 19:59
| #12 | |
| Fast old git Join Date: Aug 2004 Location: Stirling
Posts: 2,747
Thanks: 23
Thanked 17 Times in 15 Posts
|  Quote:
__________________ Alan "Darth" - Black Magic Octavia VRS with Forge DV, BMC CDA induction kit, Milltek cat, Supersprint exhaust, Xenons, ESP, cruise, parking sensors and Kumho 225/45/17 tyres Been to Star sufficient bhp & ample lb/ft All time low - 7.8 mpg | |
|
| |
|
21-12-2004, 20:05
| #13 | |
| Briskodian Join Date: Aug 2004 Location: North London
Posts: 1,204
Thanks: 0
Thanked 0 Times in 0 Posts
| Quote:
__________________ Fabia has SOLD! Weekend car: Cooper Green TVR Chimaera Daily driver: Carmine Red Vauxhall Omega... 2.0 LS... Auto... Estate... with towbar & drinking problem | |
|
| |
|
21-12-2004, 20:16
| #14 |
| BRISKODA Staff  Join Date: Oct 2002 Location: Cambridgeshire
Posts: 17,041
Thanks: 45
Thanked 153 Times in 115 Posts
| The Wheel and Tyre Bible below is also an excellent reference for tyre information: http://www.chris-longhurst.com/carbi...yre_bible.html
__________________ Denis 2002 Octavia 1.8T 4X4 turbo Estate - rebreathed on by Jabba ... 31.93mpg2007 Fabia vRS - CC, ESP, Jabba rear ARB, and full leather trim by Seat Surgeons ...48.01 mpg... |
| |
|
21-12-2004, 20:20
| #15 |
| Briskodian Join Date: Aug 2004 Location: North London
Posts: 1,204
Thanks: 0
Thanked 0 Times in 0 Posts
| This may also be useful... For those wanting to go wider but keep the same rolling radius and not bugger up their speedo reading: http://www.tyresave.co.uk/tyresize.html
__________________ Fabia has SOLD! Weekend car: Cooper Green TVR Chimaera Daily driver: Carmine Red Vauxhall Omega... 2.0 LS... Auto... Estate... with towbar & drinking problem |
|
| |
Linear Mode
