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 Posted: Tue Dec 14, 2010 4:15 am |
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Joined: Feb 14, 2010
Posts: 516
Trade Rating: 0
Location: Newcastle / Plymouth
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| panason1c wrote: |
Apart from a minor change to the speedo reading you will notice a slightly 'firmer' ride as the shallower tyre absorbs less of the bumps in the road.
Note...... use a sat nav, or similar, to check the speedo against the accurate sat nav reading |
cheers for the reply panason1c - i was already aware of the impact on the rolling circumference and speed reading. im not too concerned by 3% lower readings
My question was, is it ok to run 50's on the front and 55's on the rear (or vice versa).
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Posted: Tue Dec 14, 2010 4:16 am |
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Joined: Feb 07, 2010
Posts: 7209
Trade Rating: +14
Location: Stevenage
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I would keep the same profile all round mate personally
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Posted: Tue Dec 14, 2010 4:26 am |
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Joined: Feb 14, 2010
Posts: 516
Trade Rating: 0
Location: Newcastle / Plymouth
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| Mikey2uk wrote: |
| I would keep the same profile all round mate personally |
Dont get me wrong, ideally I would just buy 2x 55's - but you cannot ignore the difference in price for 50's - especially at xmas time!
I was planning on doing this in the new year, but with yet more snow forcast, I really need to lose my 'option' Pirelli Nero 17's and get something a bit more suited to snow and ice.
I know running 2 different profiles isnt ideal, but if both are ok to run individually, could they really cause that much bother paired up?
Haha I wont even ask about running Sirrys up front and Vortex's at the back 
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Posted: Tue Dec 14, 2010 4:26 am |
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Joined: Feb 21, 2010
Posts: 3945
Trade Rating: +45
Location: basingstoke
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It wnt mater just so long as the two on the front axle are the same you can have a 14" and a 17" wheel on the back if ya like
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| PAST -2008 Vauxhall Astra VXR / 2002 pug 206 GTI
PRESENT - VW Golf GTI Semi - Auto
Now have my 106 GTI track car 
TEAM - I HATE FACEBOOK | |
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Posted: Tue Dec 14, 2010 4:44 am |
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Joined: Sep 05, 2010
Posts: 461
Trade Rating: 0
Location: Somerset
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| Locky wrote: |
My question was, is it ok to run 50's on the front and 55's on the rear (or vice versa). |
I would think the only issue with that would be one of insurance cover?.....your insurance might be affected if you had a bump and the mix of tyre sizes was involved due to a handling issue.
Another problem would be that you would need to carry two spare tyres, one of each size, otherwise you would be breaking the law if you mixed two different tyre sizes on the same axle in the event of having a puncture.
ps........... a 'spacesaver' spare wheel is the only exception to the rule of requiring both tyres on the axle to be the same size, etc.
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| 1.4 hdi, 206, Year..2003, 100,000 miles
Mercedes, ML270CDI, 2002, 200,000 miles
BMW K1200RS | |
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Posted: Tue Dec 14, 2010 5:10 am |
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Joined: Feb 14, 2010
Posts: 516
Trade Rating: 0
Location: Newcastle / Plymouth
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| panason1c wrote: |
| Locky wrote: |
My question was, is it ok to run 50's on the front and 55's on the rear (or vice versa). |
I would think the only issue with that would be one of insurance cover?.....your insurance might be affected if you had a bump and the mix of tyre sizes was involved due to a handling issue.
Another problem would be that you would need to carry two spare tyres, one of each size, otherwise you would be breaking the law if you mixed two different tyre sizes on the same axle in the event of having a puncture.
ps........... a 'spacesaver' spare wheel is the only exception to the rule of requiring both tyres on the axle to be the same size, etc. |
Well both tyres would be identical per axle - baring a puncture and needing a space saver being the exception.
I suppose the implications of an insurance company deeming a 2x2 mix of tyre profiles unsafe are not to be taken lightly. I guess its looking more like im buying two 55s then!!
Just something thats come to mind, I see there are a lot of folks on here who run 50s all round rather than the factory/recommended 55s - so would that itself not have insurance implications come claim time?
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Posted: Tue Dec 14, 2010 5:14 am |
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Joined: Sep 05, 2010
Posts: 461
Trade Rating: 0
Location: Somerset
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I think the mix of different sizes on the two axles might be of more concern to an insurance company due to having more of an effect on the handling than same size tyres all round.
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| 1.4 hdi, 206, Year..2003, 100,000 miles
Mercedes, ML270CDI, 2002, 200,000 miles
BMW K1200RS | |
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Posted: Tue Dec 14, 2010 5:22 am |
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Joined: Sep 05, 2010
Posts: 461
Trade Rating: 0
Location: Somerset
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Just had a thought...............A possible problem of fitting non-matching profiles to a vehicle fitted with ABS would create different rolling diameters between the two axles and would probably cause the ABS to disable and the light to stay on due to the abs system ecu being 'confused' by receiving signals from each wheel sensor that dont match the same rpm.
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| 1.4 hdi, 206, Year..2003, 100,000 miles
Mercedes, ML270CDI, 2002, 200,000 miles
BMW K1200RS | |
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Posted: Tue Dec 14, 2010 5:27 am |
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Joined: Feb 14, 2010
Posts: 516
Trade Rating: 0
Location: Newcastle / Plymouth
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| panason1c wrote: |
| Just had a thought...............A possible problem of fitting non-matching profiles to a vehicle fitted with ABS would create different rolling diameters between the two axles and would probably cause the ABS to disable and the light to stay on due to the abs system ecu being 'confused' by receiving signals from each wheel sensor that dont match the same rpm. |
Yeah that had crossed my mind too mate.
There doesnt seem to be a very good selection of 55s to choose from compared to the 50 range.
Reading up on the reviews, it would also seem the Pirelli P6000 (55s) which I already have are useless in winter conditions, as are Toyo T1R Proxes which was gonna be my second tyre choice.
Now im wondering if it would be better to get 4 new 50s rather than 2 new 55s.
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Posted: Tue Dec 14, 2010 5:33 am |
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Joined: Sep 05, 2010
Posts: 461
Trade Rating: 0
Location: Somerset
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Sounds like 4 x 50's is the way to go.....
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| 1.4 hdi, 206, Year..2003, 100,000 miles
Mercedes, ML270CDI, 2002, 200,000 miles
BMW K1200RS | |
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Posted: Tue Dec 14, 2010 5:49 am |
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Joined: Feb 14, 2010
Posts: 516
Trade Rating: 0
Location: Newcastle / Plymouth
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| panason1c wrote: |
| Sounds like 4 x 50's is the way to go..... |
Ideally yes it would if I had the moneys!! Bah!
Shame 4x 50's still work out more expensive than 2x 55s lol
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Posted: Tue Dec 14, 2010 6:24 am |
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Joined: Feb 08, 2010
Posts: 10151
Trade Rating: +12
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this is normal lol
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Posted: Tue Dec 14, 2010 6:49 am |
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Joined: Feb 07, 2010
Posts: 7209
Trade Rating: +14
Location: Stevenage
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If you going for 4x 50 I would recomend the Bridgestones EZ300 I have got these on mine and they are a really good tyre. I first had them on last year and have done 30k on them and have only just replaced the fronts.
The arent bad on price either. I think blackcircles.co.uk are dong them for £55 each.
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Posted: Tue Dec 14, 2010 6:54 am |
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Joined: Feb 22, 2010
Posts: 311
Trade Rating: +4
Location: Coventry/Manchester
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| panason1c wrote: |
| Just had a thought...............A possible problem of fitting non-matching profiles to a vehicle fitted with ABS would create different rolling diameters between the two axles and would probably cause the ABS to disable and the light to stay on due to the abs system ecu being 'confused' by receiving signals from each wheel sensor that dont match the same rpm. |
I would have thought this too. I have 55's on the front and 50's on the back (temporarily I might add), it doesn't disable the ABS. Feels like it affects heavy breaking slightly though. Will soon be getting 50s all round when i get some moolahh.
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| Jun 09 - Nov 09: Peugeot 106 1.1 Independence
Nov 09 - January 10: Vauxhall Astra 1.6 8v Club
January 10 - June 10: Peugeot 206 1.4 GLX
June 10 - Present: Peugeot 206 2.0 GTi | |
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Posted: Tue Dec 14, 2010 7:12 am |
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Joined: Feb 21, 2010
Posts: 3945
Trade Rating: +45
Location: basingstoke
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| Mikey2uk wrote: |
If you going for 4x 50 I would recomend the Bridgestones EZ300 I have got these on mine and they are a really good tyre. I first had them on last year and have done 30k on them and have only just replaced the fronts.
The arent bad on price either. I think blackcircles.co.uk are dong them for £55 each. |
you got just under 30k miles from your front tyres  im lucky to get 10k out of mine 
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| PAST -2008 Vauxhall Astra VXR / 2002 pug 206 GTI
PRESENT - VW Golf GTI Semi - Auto
Now have my 106 GTI track car
TEAM - I HATE FACEBOOK | |
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