I know this has probably been asked before, but I wana know is that would 18s on a classic with 225/40/18 be ok? I know they may/will rub but thats not the issue, the issue is the handling, I want to know that would the handling go out? Can it be rectified with a 4 wheel alignment? Car is on std suspension with lowering springs and std anti roll bars droo links etc, thanks

 

Bump

 

If you've already lowered it, you will have upset the supension...it lowers the roll-centre which makes the car roll MORE, so you handling is knackered. Not much, but it's there

I'm pretty sure that 35 series are needed to keep your rolling radius the same on classics. Mine runs 215/40/17" so yours would need 215/35/18"?

 

yeah 35's will be needed on a classic, you'll find the ride pretty hard and bumpy.

 

Hmm well many are running 215/45/17 which I am currently so I thought 225/40/18 would be ok?

 

215/45/17 are too large for a classic, they put the rolling radius about 10% out.

215/40/17 makes it about 1.4% out.

Your car, your choice.

 

10% outs a bit of an exajeration.

this is a good checker.

http://www.etyres.co.uk/tyre-size-calculator

Alcazar, without quantifying how much hes lowered it, the sweeping statement that its now knackered is a bit strong! Up to 15mm or so with the correct increase in stiffness isnt too much of an issue in reality when combined with old OE rubber bushes etc.

But the jist is veerinder, 18's for show, and 17's for go! If your all about what the car looks like and are happy to only ever push to 75%, you probably wont notice a difference other than the 18's are a much harder ride. if your ever thinking of tracking it or like to occasionally push on a bit, the 17's will give you more grip and a much nicer feel than the equivalent 18's and cost alot less every time they need changing.

 

Just checked it out and its only 1.92% difference, which isnt alot! Well I might go for the 225/40/18 from 215/45/17 , which isnt much diff, if you think about it the profile will be roughly the same as currently on 45 and will be moving to 40 and width wil be 225 from the current 215

 

Be interested to know more on this, I recently put 215/45/17 on my classic, there was 215/40/17 on them and the ride was very hard, the change up in size made the ride far more comfortable and I can't tell any noticeable difference in handling?

 

But the fact remains, as I said, the handling is compromised. not much, but there it is..........

So, in my mind, why do it?

Not ONE thing have I done to my car that hasn't made it better in some way, comfort, handling, performance...what's the point of buying a performance car and sacrificing the performance to make it look gangsta?