Calling tyre experts!!!
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At the moment I've got 195/60/15 on the scoob.. but thinking ahead I want to but a different size tyre on when they wear out. What other sizes can I fit? I was thinking of going for a lower profile and slightly wider, maybe 205/45/15... will they fit ok? Also I assume it is not a good I idea to fit different size tyres to the front than to the back... I know it is really bad to mix they across an axle, but does front to back really matter?
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Questions questions
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From: Focus RS slightly modified!!
Ed,
Don't bother with 15"s just go for a 16" or 17" package, you must keep to the correct tyre size for what ever wheel you choose or the rolling circumference will be wrong. This will also upset the speedo, there are plenty or wheel sets in the parts for sale.
You know it makes sense, go bigger. Gold looks very nice with black.
Rgds, Bryan
Don't bother with 15"s just go for a 16" or 17" package, you must keep to the correct tyre size for what ever wheel you choose or the rolling circumference will be wrong. This will also upset the speedo, there are plenty or wheel sets in the parts for sale.
You know it makes sense, go bigger. Gold looks very nice with black.
Rgds, Bryan
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Ed,
On a Scoob I wouldn't mix tyres of different makes never mind sizes, you are dealing with a four wheel drive 200+Bhp car after all. I'd second Bryan and go for a 16" or 17" package. You'll get improved grip with the 205/215 tyres (depends on the package) and it will handle better with the lower profile tyres.
DaveW
On a Scoob I wouldn't mix tyres of different makes never mind sizes, you are dealing with a four wheel drive 200+Bhp car after all. I'd second Bryan and go for a 16" or 17" package. You'll get improved grip with the 205/215 tyres (depends on the package) and it will handle better with the lower profile tyres.
DaveW
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fitting over-sized (in width) tyres is not ideal...
as with all things to do with tyres this is not *always* the case.. but..
radial tyres are designed with the rim seat positions in mind. Simplified...
if you imagine the sidewall was rigid and there was a pivot at the corner where it met the tread section.. the rim seat would have to be absolutely directly above that pivot. Otherwise the wall would have to pivot over and past it's highest point as the tyre screwed sideways during cornering...
luckily tyres are better designed, but the principle applies (if to an infinately lesser extent).
It is very unlikely that you will see an improvement in grip or handling if you fit over sized tyres.
Always best to stick with the size the manufacturer recomends. They could have fitted any size they wanted to the car, but after substantial testing, they chose that one.
Cheers
Simon
as with all things to do with tyres this is not *always* the case.. but..
radial tyres are designed with the rim seat positions in mind. Simplified...
if you imagine the sidewall was rigid and there was a pivot at the corner where it met the tread section.. the rim seat would have to be absolutely directly above that pivot. Otherwise the wall would have to pivot over and past it's highest point as the tyre screwed sideways during cornering...
luckily tyres are better designed, but the principle applies (if to an infinately lesser extent).
It is very unlikely that you will see an improvement in grip or handling if you fit over sized tyres.
Always best to stick with the size the manufacturer recomends. They could have fitted any size they wanted to the car, but after substantial testing, they chose that one.
Cheers
Simon
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