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Big in the rear but small in the front end?

monkeykplunk
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monkeykplunk Mentor

monkeykplunk

Posted
Posted

Ok, so I need new tyres as the ones on the rear are pretty much at indicators on the inside of both tyres.

At the moment I'm running 255/40 17 on the rear and 235/45 17 on the front.

I've gotten some really good prices off people I know, but I thought I'd check em out against prices just over the phone with shops.

I got one old bloke who asks me why the hell I would want to run 255's with a 235 on the front.

He carried on for a while about how having such a large tyre on the rear will put more pressure on the front of the car and make things like the front suspension work harder and stuff it in the long run.

Then he tells me that I won't get any decent mileage out of any tyre anyway, so I may as well just buy cheap ones instead of spending my moeny on expensive things that won't be any better.

Whilst I ignored his banter at the time and wondered why he wouldn't just give me a price on what I asked for and take my money instead of talkign me out of something and into something cheaper, he got me thinking.....

Is there any truth to what he was saying about the front having to work harder and thus ****ing other things by having larger tyres on the rear?

Or was he just full of bullshit?

nmcmahon83 Proficient

nmcmahon83

Posted
Posted

wider rear tyre gives bigger contact patch = more grip at the rear... your car is RWD, so u need more grip at the rear when launching... If anything, I would have thought that a wider tyre would put more stress on components since there is a greater resistance to movement, so the shock goes through those parts that can move. eg... bigger rear tyre puts more stress through gearbox cos instead of just spinning, the tyre sticks and causes resistance against gearbox/diff...

as for the fronts... i cant see how turning with less resistence is going to stuff anything up in the long run... maybe if you had super wide tyres on the front there'd be more stress because instead of the tyres just scrubbing along (understeer) they are gripping and the suspension is left to disapate more of the energy... i dunno...

sounds like a retard to me.

inissane Proficient

inissane

Posted
Posted

there are bits of truths here and there but generally bs - just get some 245s on the back and u will be fine they will fit on sweet. The quality of the tyre you put on depends on ur driving habits etc and say what tyres you got on the front? std suspension? large wheels/tyres been put on skylines since blot, hes probably old school

you get what you pay for usually in terms of grip, a quality michelin tyre of 225 diameter would kill a 255 falken but you may wear it quicker and it not be worthwhile - depends

monkeykplunk Mentor

monkeykplunk

Posted
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Posted

yeah i figured it was mostly bs

I mean, the logical way of looking at it is that a wider tyre will give you a bigger area of rubber on the road and therefore improve the way in which the car contacts the road.

I spose the crucial thing is that you get a decent tread pattern with regard to water displacement when the tyre is that large, because some may be ineffective in channelling the water away from the centre of a wider tyre.

At the moment I'm running Kumho Supra 712's, and they're pretty good at that, but in my travels shopping around I've seen patterns that just wouldn't work on a wide tyre.

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