322mm front brakes and 5 stud conversion
Discussion
Hi All
I have the 322mm 5 stud brake conversion (from Hans) which I'm trying to fit 16" wheels over, i have a set of et35 cerbera wheels which have a lip running around behind the spokes which catches the calliper.
To get over this i thought a 5 or 10mm hub centric spacer would do the trick, but there is already a 5mm hub centric spacer behind the disk to centre it in the calliper and to move the disk away from the track rod end by the same amount.
My question is, is another spacer acceptable with longer press in studs? or is there another disk available that doesn't need the first spacer?
its all getting a bit messy with spacers and spigot rings and id like to simplify it
Anyone who is running big brakes what wheels dia, width, offsets are you using?
Cheers
Disco
I have the 322mm 5 stud brake conversion (from Hans) which I'm trying to fit 16" wheels over, i have a set of et35 cerbera wheels which have a lip running around behind the spokes which catches the calliper.
To get over this i thought a 5 or 10mm hub centric spacer would do the trick, but there is already a 5mm hub centric spacer behind the disk to centre it in the calliper and to move the disk away from the track rod end by the same amount.
My question is, is another spacer acceptable with longer press in studs? or is there another disk available that doesn't need the first spacer?
its all getting a bit messy with spacers and spigot rings and id like to simplify it
Anyone who is running big brakes what wheels dia, width, offsets are you using?
Cheers
Disco
Of course you already know all this, but others might not:
If your total spacer-age exceeds 6mm, you will need longer studs, as you suggest.
I had a wheel come off my trailer at 50mph thanks to ignoring the need for longer studs.....I had assumed that a 5mm spacer would be fine, but the bigger wheels I had fitted were thicker than the originals. Now with longer studs, no more wheels overtaking the car.
The next issue may be where the spacers leave your wheels - too far out and they may catch on the wheelarches.
What offset are those wheels? If they are ET42, as I think I may have read somewhere, then you will be fine.
If they are a smaller ET, eg ET25, then you may be in trouble, as 10mm of spacers effectively make the wheels ET15.
Standard rears for the Chimaera are ET33, fronts ET25.
If any individual spacer is over 10mm, then hubcentric spacers will be a good idea.
The alternative is to sell the kit you have and buy some BMW-fit 324mm Brembos. I think Chimpongas fitted these under 16 inch wheels. There is an exhaustingive thread on this which i will find next.
He will have all the part numbers, as will Classichimi, who has done the same conversion, though his is under 17 inch wheels.
ETA - both were 4-stud conversions, but you can either re-drill the disks to fit 5 stud, or I have a feeling there are 5-stub BMs with similar sized disks.
If your total spacer-age exceeds 6mm, you will need longer studs, as you suggest.
I had a wheel come off my trailer at 50mph thanks to ignoring the need for longer studs.....I had assumed that a 5mm spacer would be fine, but the bigger wheels I had fitted were thicker than the originals. Now with longer studs, no more wheels overtaking the car.
The next issue may be where the spacers leave your wheels - too far out and they may catch on the wheelarches.
What offset are those wheels? If they are ET42, as I think I may have read somewhere, then you will be fine.
If they are a smaller ET, eg ET25, then you may be in trouble, as 10mm of spacers effectively make the wheels ET15.
Standard rears for the Chimaera are ET33, fronts ET25.
If any individual spacer is over 10mm, then hubcentric spacers will be a good idea.
The alternative is to sell the kit you have and buy some BMW-fit 324mm Brembos. I think Chimpongas fitted these under 16 inch wheels. There is an exhaust
He will have all the part numbers, as will Classichimi, who has done the same conversion, though his is under 17 inch wheels.
ETA - both were 4-stud conversions, but you can either re-drill the disks to fit 5 stud, or I have a feeling there are 5-stub BMs with similar sized disks.
Here's the link to the thread.....
http://www.pistonheads.com/gassing/topic.asp?t=157...
As always with a Chimpo thread, it re-defines the word "comprehensive"
http://www.pistonheads.com/gassing/topic.asp?t=157...
As always with a Chimpo thread, it re-defines the word "comprehensive"
The SP12 are I think 7 inch front, 8 inch rear.
Tyres were 215/45 17 fronts and 235/40 18 rears. Correct front to rear variation. No rubbing once I had raised the rear ride height slightly, but that was only because they were track tyres, Toyo R888, which are very square shouldered and come up about 10mm wider than road tyres.
I now have Toyo R1-R on them, in 225/45 17 front and 225/40 18 rear. They are my road tyres and wet track tyres. I wanted a set of R1-Rs, but there are too few sizes. The fronts just catch on the back of the headlight inspection covers on full lock.
The Monzas are shod with 215/45 17 Yokohama A048s, my current dry track tyres. Chosen because I found them barely run in for 1/3 of their normal retail price, previously on a show Subaru.
Both my current sets are the same diameter front and rear - I have Racing Red dampers, so we just raised the rear ride height one inch to get the factory rake.
I avoid trying to fit 245, 255 or 265 section tyres on the rear because I am on a tight budget and simply cannot afford to have to bin or sell off a mistake. Many do fit 245s with little or no problem.
Tyres were 215/45 17 fronts and 235/40 18 rears. Correct front to rear variation. No rubbing once I had raised the rear ride height slightly, but that was only because they were track tyres, Toyo R888, which are very square shouldered and come up about 10mm wider than road tyres.
I now have Toyo R1-R on them, in 225/45 17 front and 225/40 18 rear. They are my road tyres and wet track tyres. I wanted a set of R1-Rs, but there are too few sizes. The fronts just catch on the back of the headlight inspection covers on full lock.
The Monzas are shod with 215/45 17 Yokohama A048s, my current dry track tyres. Chosen because I found them barely run in for 1/3 of their normal retail price, previously on a show Subaru.
Both my current sets are the same diameter front and rear - I have Racing Red dampers, so we just raised the rear ride height one inch to get the factory rake.
I avoid trying to fit 245, 255 or 265 section tyres on the rear because I am on a tight budget and simply cannot afford to have to bin or sell off a mistake. Many do fit 245s with little or no problem.
Ps, my car is going yellow when I can afford the respray.
Bought these when I spotted them on EBay, from a geezer in my village! 7.5j wide, 17 inch rims. Loving them already. Will try to get 215/45 17 for the fronts and 235/45 17 for the rears, to give the Chimaera "rake". They are multifut, 4x100 and 4x108, ET38. So 5mm spacers all round, and as they have 70.1 centre bores I simply bought some 70.1 > 63,2 spigot rings to bring them down to the correct fitment.
Only £120, same weight as the SP12s, so worth spacers and spigot rings
Bought these when I spotted them on EBay, from a geezer in my village! 7.5j wide, 17 inch rims. Loving them already. Will try to get 215/45 17 for the fronts and 235/45 17 for the rears, to give the Chimaera "rake". They are multifut, 4x100 and 4x108, ET38. So 5mm spacers all round, and as they have 70.1 centre bores I simply bought some 70.1 > 63,2 spigot rings to bring them down to the correct fitment.
Only £120, same weight as the SP12s, so worth spacers and spigot rings
QBee said:
The SP12 are I think 7 inch front, 8 inch rear.
Tyres were 215/45 17 fronts and 235/40 18 rears. Correct front to rear variation. No rubbing once I had raised the rear ride height slightly, but that was only because they were track tyres, Toyo R888, which are very square shouldered and come up about 10mm wider than road tyres.
I now have Toyo R1-R on them, in 225/45 17 front and 225/40 18 rear. They are my road tyres and wet track tyres. I wanted a set of R1-Rs, but there are too few sizes. The fronts just catch on the back of the headlight inspection covers on full lock.
The Monzas are shod with 215/45 17 Yokohama A048s, my current dry track tyres. Chosen because I found them barely run in for 1/3 of their normal retail price, previously on a show Subaru.
Both my current sets are the same diameter front and rear - I have Racing Red dampers, so we just raised the rear ride height one inch to get the factory rake.
I avoid trying to fit 245, 255 or 265 section tyres on the rear because I am on a tight budget and simply cannot afford to have to bin or sell off a mistake. Many do fit 245s with little or no problem.
I have spiders with rear 255 35 18 et35. front 235 40 18 et42. Both 8.5j, the rears are fine bit the fronts are a mare, i need 225 40 which are a bit stretched and like riding on rubber bands ideally id like 17" but i haven't found a set of wheels to rival the look of spiders in that size.Tyres were 215/45 17 fronts and 235/40 18 rears. Correct front to rear variation. No rubbing once I had raised the rear ride height slightly, but that was only because they were track tyres, Toyo R888, which are very square shouldered and come up about 10mm wider than road tyres.
I now have Toyo R1-R on them, in 225/45 17 front and 225/40 18 rear. They are my road tyres and wet track tyres. I wanted a set of R1-Rs, but there are too few sizes. The fronts just catch on the back of the headlight inspection covers on full lock.
The Monzas are shod with 215/45 17 Yokohama A048s, my current dry track tyres. Chosen because I found them barely run in for 1/3 of their normal retail price, previously on a show Subaru.
Both my current sets are the same diameter front and rear - I have Racing Red dampers, so we just raised the rear ride height one inch to get the factory rake.
I avoid trying to fit 245, 255 or 265 section tyres on the rear because I am on a tight budget and simply cannot afford to have to bin or sell off a mistake. Many do fit 245s with little or no problem.
where do you source your spacers and spigots?
Edited by Discopotatoes on Sunday 2nd October 20:37
Your present tyres actually make the fronts slightly bigger (about 10mm) than the rears. You are right, 225/40 would be better, or 235/35.
Amazed your fronts don't catch. And ET42 is a long way into the wheel arch.10-15mm of spacers is a good thing.
You can get 16 inch spiders cheaply, as T car owners are less keen on them. 225/45 16 would be perfect with 255/35 18s in terms of diameter. 26mm different - perfect. Just depends on whether the brakes would fit under them. There is a set of four on the Facebook TVR Buy and Sell group for £180 right now.
Amazed your fronts don't catch. And ET42 is a long way into the wheel arch.10-15mm of spacers is a good thing.
You can get 16 inch spiders cheaply, as T car owners are less keen on them. 225/45 16 would be perfect with 255/35 18s in terms of diameter. 26mm different - perfect. Just depends on whether the brakes would fit under them. There is a set of four on the Facebook TVR Buy and Sell group for £180 right now.
QBee said:
Your present tyres actually make the fronts slightly bigger (about 10mm) than the rears. You are right, 225/40 would be better, or 235/35.
Amazed your fronts don't catch. And ET42 is a long way into the wheel arch.10-15mm of spacers is a good thing.
They do that what i meant by they're a mare
You can get 16 inch spiders cheaply, as T car owners are less keen on them. 225/45 16 would be perfect with 255/35 18s in terms of diameter. 26mm different - perfect. Just depends on whether the brakes would fit under them.
There is a set of four on the Facebook TVR Buy and Sell group for £180 right now.
I've messaged the guy but he's away
would 16" front and 18 rear look odd?Amazed your fronts don't catch. And ET42 is a long way into the wheel arch.10-15mm of spacers is a good thing.
They do that what i meant by they're a mare
You can get 16 inch spiders cheaply, as T car owners are less keen on them. 225/45 16 would be perfect with 255/35 18s in terms of diameter. 26mm different - perfect. Just depends on whether the brakes would fit under them.
There is a set of four on the Facebook TVR Buy and Sell group for £180 right now.
I've messaged the guy but he's away
RobXjcoupe said:
Discopotatoes said:
would 16" front and 18 rear look odd?
I've seen a griff with a set like that and they look tremendously odd :sI would take the car to him and ask to try them on the car. To make sure they clear the brakes.
Or you could go for the entire set on your car - 16 all round.
The guy's a TVR enthusuast, like yourself.
Or find some 5 stud 17s you like.
Hey disco, i bought a 330mm ap setup with the 5 stud. When i put it all on i like you had the same issue. Then realised i had put the spigots on the front and not the spacers.
Mine were from sportmotive.
http://www.sportmotive.co.uk/partsales/wheels.html
There 65quid, are a space and spigot in one. Have a look made all the difference to me.
Mine were from sportmotive.
http://www.sportmotive.co.uk/partsales/wheels.html
There 65quid, are a space and spigot in one. Have a look made all the difference to me.
Mike8448 said:
Hey disco, i bought a 330mm ap setup with the 5 stud. When i put it all on i like you had the same issue. Then realised i had put the spigots on the front and not the spacers.
Mine were from sportmotive.
http://www.sportmotive.co.uk/partsales/wheels.html
There 65quid, are a space and spigot in one. Have a look made all the difference to me.
the spacers i have have to go behind the disk or it fouls the caliper, then i have spigots which fit the spidersMine were from sportmotive.
http://www.sportmotive.co.uk/partsales/wheels.html
There 65quid, are a space and spigot in one. Have a look made all the difference to me.
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