18" on a classic
#1
Scooby Regular
Thread Starter
iTrader: (22)
Join Date: May 2006
Location: Doncaster, S. Yorks.
Posts: 21,415
Received 0 Likes
on
0 Posts
18" on a classic
can i ask if anyone on here is running 225/40/18 on a classic?
i know the general corect sizes are usually the following...
205/50/16 radius = 305.6mm
205/45/17 radius = 308.2mm
215/40/17 < currently mine radius = 301.9mm
215/35/18 radius = 303.8mm
now the 225/40/18 has a raduis of 318.6mm
besides the slight speed reading issues, would it scrape either the arches on full lock or my mudflaps?
any pics advice welcome, thanks.
i know the general corect sizes are usually the following...
205/50/16 radius = 305.6mm
205/45/17 radius = 308.2mm
215/40/17 < currently mine radius = 301.9mm
215/35/18 radius = 303.8mm
now the 225/40/18 has a raduis of 318.6mm
besides the slight speed reading issues, would it scrape either the arches on full lock or my mudflaps?
any pics advice welcome, thanks.
#2
Scooby Regular
Join Date: Mar 2006
Location: Down the road from Oulton Park
Posts: 421
Likes: 0
Received 0 Likes
on
0 Posts
I'm running 225/35/18 on an et 53 without issues. I did think that the 40 profile had issues with the spring platform as it's 26mm bigger diameter than a standard tyre. It's 22mm more than mine and I don't think there's that much space.
Thanks,
Paul.
Thanks,
Paul.
#3
Scooby Regular
Thread Starter
iTrader: (22)
Join Date: May 2006
Location: Doncaster, S. Yorks.
Posts: 21,415
Received 0 Likes
on
0 Posts
as i was trying to work out how much bigger they would be over my current ones. so the difference between 301.9mm and 318.6mm worked out to be under 17mm raduis and 5 mm each side width wise. my main concern was rubbing of the arches and suspension shocks. for the record i have gas adjustable shocks (agx kyb - stiffest setting) and eiback springs. the rear is a little lower, the front a tiny bit. rarely have more than two in the car and never have rubbing issues with current tyres.
#4
Scooby Regular
Join Date: Mar 2006
Location: Down the road from Oulton Park
Posts: 421
Likes: 0
Received 0 Likes
on
0 Posts
I've got the same suspension set up as you and 225/35 on the correct ET are not an issue. The trouble comes, on the 40s, from the small gap between tyre and spring platform when the tyre moves, obviously it doesn't move far as the strut, wheel and tyre are fixed together but the tyre does flex and rub on the strut or so I've been told.
I use this site for tyre sizes: TYRESAVE: Tyre Size Calculator
Thanks,
Paul.
I use this site for tyre sizes: TYRESAVE: Tyre Size Calculator
Thanks,
Paul.
#5
Scooby Regular
iTrader: (3)
can i ask if anyone on here is running 225/40/18 on a classic?
i know the general corect sizes are usually the following...
205/50/16 radius = 305.6mm
205/45/17 radius = 308.2mm
215/40/17 < currently mine radius = 301.9mm
215/35/18 radius = 303.8mm
now the 225/40/18 has a raduis of 318.6mm
besides the slight speed reading issues, would it scrape either the arches on full lock or my mudflaps?
any pics advice welcome, thanks.
i know the general corect sizes are usually the following...
205/50/16 radius = 305.6mm
205/45/17 radius = 308.2mm
215/40/17 < currently mine radius = 301.9mm
215/35/18 radius = 303.8mm
now the 225/40/18 has a raduis of 318.6mm
besides the slight speed reading issues, would it scrape either the arches on full lock or my mudflaps?
any pics advice welcome, thanks.
Here's how they look.
Trending Topics
Thread
Thread Starter
Forum
Replies
Last Post