new wheels for my chim Help;;;;
Discussion
hi
im looking for new wheels for my chim' and have been told all sorts 17 inch all round is ok'ring up someone else and its not ok . the latest ive been told is 8x18 rear and 7x17 front with 245-45-18 and 215-40 17 and offset on front and rear is difrent. 23-29 front 24-46 rear Iwould like to know if anyone has put 17s all round and what size tyres ect.
your input is much aprappreciated thanks
Jon...........
im looking for new wheels for my chim' and have been told all sorts 17 inch all round is ok'ring up someone else and its not ok . the latest ive been told is 8x18 rear and 7x17 front with 245-45-18 and 215-40 17 and offset on front and rear is difrent. 23-29 front 24-46 rear Iwould like to know if anyone has put 17s all round and what size tyres ect.
your input is much aprappreciated thanks
Jon...........
Hi Jonka
I have recently taken my 17's off the chim and have put the originals back on, to bring it back to original condition. The handling and everything else was fine on the wheels, they were 215/40 at front and 225/45 at the back. Also if you're interested and would like to see pics of them drop me an e-mail.
Ta
James
I have recently taken my 17's off the chim and have put the originals back on, to bring it back to original condition. The handling and everything else was fine on the wheels, they were 215/40 at front and 225/45 at the back. Also if you're interested and would like to see pics of them drop me an e-mail.
Ta
James
petros said:
Got my new ones on order with Image Wheels ( Imagewheels.co.uk ) 17" all round. 245 40 17 for the rear,215s for the front.
Have you gone for RM2's?
I reckon they look the best!
Can I be cheeky and ask how much the set cost you? I read their pricing tables - is it me or are they confusing or what???????!!!
Hope this helps
Have been looking for wheels for months dealers have tried to sell me all sorts the Peugoet 206 wheel seems to fit but wheels only come in 7inch width.
Ok for front but not good for the back.
Talk to steve at www.turner-auto-design.com he is a good block and has more than couple of wheel options for a Chimaera.
Regards
>> Edited by argoose on Saturday 25th February 20:58
Have been looking for wheels for months dealers have tried to sell me all sorts the Peugoet 206 wheel seems to fit but wheels only come in 7inch width.
Ok for front but not good for the back.
Talk to steve at www.turner-auto-design.com he is a good block and has more than couple of wheel options for a Chimaera.
Regards
>> Edited by argoose on Saturday 25th February 20:58
jonka said:
245-45-18 and 215-40 17 and offset on front and rear is difrent. 23-29 front
245/45/18 will be way too big on circumference, ideally 225 - 235/40/18 for the rears. if you are going to go to 245 width you will really need an 8 or ideally 8.5 inch rim width and 35 profile tyre, otherwise the speedo will be under-reading and it wont look or ride correctly.
Theres a lot talked about the impact on handling of larger wheels but IMHO the main issue is that the lower the profile tyre you run the more sensitive the car is to sidewall stiffness and tyre pressures. In my case on Toyo T1S, which have a nice soft sidewall, 215/40/17 front and 235/40/18 rear I have had no issues as regards handling or grip, including driving ranging from sprinting and track days to fast road driving in uk and negotiating the things they call roads in Eire, esp Co Kerry! I do adjust pressures to suit what I am doing at the time.
I started off with standard suspension which was absolutely fine, went to Protech dampers, which are great, but contrary to what you might expect I now plan go to stiffer springs as over-softness is now the weak point in the set up.
Incidentally the front offset is important for geometry and hence handling, the rear not so - other than in terms of clearances.
Oh and here are the details of my wheel set up from a previous thread:
details: BK299 7 x 17, silver, ET 38 two of: @ £93.69ea .
BK 299 7.5 x 18 silver, ET 38 two off :@ £124.95ea .
(note: main limitation is that 7.5 inch is the widest this rim comes in)
Eibach 10mm spacer for front offset correction: pair at £49.23 (ouch, but they are nicely made)
(I am using a pair of 5mm spacers at the rear also mainly for aesthetic purposes)
25mm longer 12 x 1.5mm Ford stud: for fronts @
£6.40 for 8.
Special internal key (Allen type) nuts: FOC
Set 4 spigot rings:FOC
Toyo Proxes T1-S 215/40 x 17 pair front @ £65 ea
Toyo Proxes T1-S 225/40 x 18 pair rear @ £93.75ea.
(now on 235 x 40s)
All prices ex vat from Demon Tweeeks as at Aug 2003.
The best way to avoid upsetting the handling of your car is to keep to the original offset specification and keep the rolling radii the same: to incorporate 17" wheels, the ideal spec would be a +2 option (i.e. plus two wheel sizes) - 17" front and 18" rear. Tyre sizes would be 215/40 17 front (7x17) and 245/35 18 or 225/40 18 rear (8x18). Another key factor is to get lightweight wheels that are also strong - ideally heat treated - to keep any changes to unsprung weight or inertia to a minimum without risking buckled wheels.
Unfortunately you will find it very hard to tick all of these boxes but the more you tick the better your solution... IMO!
Unfortunately you will find it very hard to tick all of these boxes but the more you tick the better your solution... IMO!
Devil's Advocate said:Keeping original rolling radius can be achieved with anything from 15" to 19" wheels; it's just a matter of tyre profile. Having bigger diameter rims on the rear is just aesthetic. I would suggest that putting 18's on the rear would cause the rear to snap away too easily under lateral force. The chassis needs some rear tyre flexing to enable progressive oversteer. It has been said here on many occasions that anything bigger than 17" will make the handling worse. The only way to do it and keep reasonable handling is to modify the suspension at the same time.
........keep the rolling radii the same: to incorporate 17" wheels, the ideal spec would be a +2 option (i.e. plus two wheel sizes) - 17" front and 18" rear........
bga said:
out of interest taihiti, what pressures are you running the proxies on?
Varies according to the circumstances, but normal road conditions say 26/28 F/R but up to 30/32 on a smooth grippy circuit. For a given suspension set up, fiddling with the F/R difference is a quick and simple way of adjusting handling balance, so if its a bit pointy and oversteering then reduce the front pressures and vice versa but with the overall tyre hardness taking account of road surfaces being driven on.
No doubt there will be those who will start wagging fingers and saying that those pressures are far too high, well these are just my findings. Of course the harder the tyres (up to a point) the greater the ultimate grip on a good surface but also, inevitably, the more violent the transition from gripping to sliding, so the more feel and anticipation together with quick reactions are required. Toe adjustments also can be quite quick (front)and have marked impact on handling, though more complex to analyse.
tahiti450 said:
out of interest taihiti, what pressures are you running the proxies on?
Varies according to the circumstances, but normal road conditions say 26/28 F/R but up to 30/32 on a smooth grippy circuit. For a given suspension set up, fiddling with the F/R difference is a quick and simple way of adjusting handling balance, so if its a bit pointy and oversteering then reduce the front pressures and vice versa but with the overall tyre hardness taking account of road surfaces being driven on.
No doubt there will be those who will start wagging fingers and saying that those pressures are far too high, well these are just my findings. Of course the harder the tyres (up to a point) the greater the ultimate grip on a good surface but also, inevitably, the more violent the transition from gripping to sliding, so the more feel and anticipation together with quick reactions are required. Toe adjustments also can be quite quick (front)and have marked impact on handling, though more complex to analyse.
Ta, I'm having a play with my tyre pressures at the mo on my 17's, not gone up to 26/28 yet but will give a go sommtime
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