Mixed tyre sizes ?

chris75 · 8th January 2009, 20:08

Quick question for those who know ! If one front tyre is 185/55/15 , is it illegal for the other front to be 195/55/15 ? This came about on my wife's 416 after fitting a non original spare . I understand about the rolling radius etc , just need to know if it will get through an MOT ?

Jamie · 8th January 2009, 20:59

If they spot it, they will fail it.

I guess you probably know this already but its a very risky thing to do, the car will not handle, corner or drive correctly...I know times are hard at the moment, but its better to be safe than sorry...change the tyre, please...change the tyre

JohnDotCom · 8th January 2009, 21:00

If you had a Police Vehicle check you would get a Ticket and three points.

afcbadam · 8th January 2009, 21:58

my dads car failed for this. the 2 on the back were 5mm bigger in tyre profile. he had the car for about 3 years and never noticed. got to ask your self why it took 3 years to notice???

David3807 · 8th January 2009, 22:15

Quote:

Originally Posted by JohnDotCom

If you had a Police Vehicle check you would get a Ticket and three points.

Just a question really but wouldnt it be treated the same as using the space saver ?? Assuming the other three tyres were all the same and only the one was a bit different.

JohnDotCom · 8th January 2009, 22:20

Afraid not,
A Space-saver is a designated tyre for emergency use only, up to the designated mileage stated for tyre.
A miss sized tyre/wheel is an offence outside that parameter.
The fixed Penalty is about £80 i believe.

Not sure what would happen if you had no spare on board, Officers discretion perhaps.
Also should be an Automatic MOT failure.

Unless someone wants to test it in court.

BigRuss · 9th January 2009, 01:53

Very useful site here: http://www.tyresafe.org/

Gives all sorts of useful information about tyres.

Russ

moonstoneboy · 9th January 2009, 07:10

A space saver is also limited in speed.

The scenario here would be such that there would be differing amounts of friction / grip for a given area.

If memory serves me correctly it is illegal to have two different tread patterns on an axle.

Do not mess with tyres, they are the things that mean you either stop safely or you vere (how do you spell it eek) off course and in to who knows what.

Paul

WeeMan · 9th January 2009, 07:37

If your a bit skint at the moment go for a part worn for the MOT at least. As stated earlier, your risking your life as well as 3 points!! ... for a £20 tyre.
Your diff will be suffering aswell with one wheel going faster than the other all the time, honestly, take the advice on here and change that tyre.

chris75 · 9th January 2009, 10:33

Thanks everyone . I guess that answers that one ! It will be off the car today..........

8th January 2009, 20:08	#1
chris75 same car since 2005 2001 Rover 75 2.0 v6 Connoisseur Saloon Join Date: Nov 2006 Location: Ellesmere Port , Cheshire Posts: 3,811 Thanks: 379 Thanked 549 Times in 466 Posts	Mixed tyre sizes ? Quick question for those who know ! If one front tyre is 185/55/15 , is it illegal for the other front to be 195/55/15 ? This came about on my wife's 416 after fitting a non original spare . I understand about the rolling radius etc , just need to know if it will get through an MOT ?

8th January 2009, 20:59	#2
Jamie Posted a thing or two In Limbo Join Date: Nov 2006 Location: Cheshire Posts: 1,685 Thanks: 4 Thanked 12 Times in 6 Posts	If they spot it, they will fail it. I guess you probably know this already but its a very risky thing to do, the car will not handle, corner or drive correctly...I know times are hard at the moment, but its better to be safe than sorry...change the tyre, please...change the tyre __________________ Finally given up trying to buy the last new rover V8 from Bristol, 2 years of haggling got me nowhere!

8th January 2009, 21:58	#4
afcbadam Gets stuck in 2004 MG ZS 180 Join Date: May 2008 Location: Southampton Posts: 978 Thanks: 0 Thanked 0 Times in 0 Posts	my dads car failed for this. the 2 on the back were 5mm bigger in tyre profile. he had the car for about 3 years and never noticed. got to ask your self why it took 3 years to notice??? __________________ AFC Bournemouth www.themgzs.co.uk Inner wing open cone Oil catch tank Janspeed cat back Janspeed de-cat Reidy Re-mapped

9th January 2009, 01:53	#7
BigRuss Premium Trader 75 CDT Tourer,2.5 Launch Saloon, Omipro MG/Rover (T4) Join Date: Jul 2007 Location: Liversedge, West Yorkshire Posts: 5,405 Thanks: 1,105 Thanked 1,340 Times in 661 Posts	Very useful site here: http://www.tyresafe.org/ Gives all sorts of useful information about tyres. Russ __________________ Replacement Key Service http://https://the75andztclub.co.uk/...d.php?t=244732 Full T4 Testbook diagnostics available. Diesel ECU repair and replacement. Options enabled or disabled as required. Diesel X-Power 135 and 160bhp, Rover 1.8T 150 to 160 MG 160 V6 to 177 upgrades available P.M. for details.

8th January 2009, 21:00	#3
JohnDotCom * Rover 75 FaceLift Tourer CDTi 170BHP Auto ConnSE 2005 Model Starlight Silver Join Date: Nov 2006 Location: Abergele Posts: 28,735 Thanks: 0 Thanked 6 Times in 5 Posts	If you had a Police Vehicle check you would get a Ticket and three points.

8th January 2009, 22:20	#6
JohnDotCom * Rover 75 FaceLift Tourer CDTi 170BHP Auto ConnSE 2005 Model Starlight Silver Join Date: Nov 2006 Location: Abergele Posts: 28,735 Thanks: 0 Thanked 6 Times in 5 Posts	Afraid not, A Space-saver is a designated tyre for emergency use only, up to the designated mileage stated for tyre. A miss sized tyre/wheel is an offence outside that parameter. The fixed Penalty is about £80 i believe. Not sure what would happen if you had no spare on board, Officers discretion perhaps. Also should be an Automatic MOT failure. Unless someone wants to test it in court.

9th January 2009, 07:10	#8
moonstoneboy Posted a thing or two Rover 75 Connoisseur SE CDT Tourer - naturally in Moonstone Green Join Date: Oct 2007 Location: Surrey - near Gatwick Airport Posts: 1,316 Thanks: 0 Thanked 3 Times in 3 Posts	A space saver is also limited in speed. The scenario here would be such that there would be differing amounts of friction / grip for a given area. If memory serves me correctly it is illegal to have two different tread patterns on an axle. Do not mess with tyres, they are the things that mean you either stop safely or you vere (how do you spell it eek) off course and in to who knows what. Paul

9th January 2009, 07:37	#9
WeeMan Posted a thing or two Mazda MX5, BMW 520i Join Date: Feb 2007 Location: Sunny Ayrshire Posts: 1,498 Thanks: 2 Thanked 4 Times in 4 Posts	If your a bit skint at the moment go for a part worn for the MOT at least. As stated earlier, your risking your life as well as 3 points!! ... for a £20 tyre. Your diff will be suffering aswell with one wheel going faster than the other all the time, honestly, take the advice on here and change that tyre.

9th January 2009, 10:33	#10
chris75 same car since 2005 2001 Rover 75 2.0 v6 Connoisseur Saloon Join Date: Nov 2006 Location: Ellesmere Port , Cheshire Posts: 3,811 Thanks: 379 Thanked 549 Times in 466 Posts	Thanks everyone . I guess that answers that one ! It will be off the car today..........