Clearance 406 Brembos and Speedline SL675

[Thijs_Rallye 86 4 Cars]

Probably a longshot but here it goes.

 

Does anyone know if the 406 Brembos will fit within a 15" Speedline SL 675 wheel without spacers? (using 283 Xantia discs, std 205 1.9 GTi hubs)

 

 

 

[IRISH_MI16 2]

What's the offset on the wheels

[Thijs_Rallye 86 4 Cars]

6,5"x15" ET16

[IRISH_MI16 2]

Because of the spoke design they might actually be OK. At worst a 2mm spacer will do it

[petert 549]

My experience with other 15" wheels is also radial clearance. I had to tweak the piping a tad. I like the front clearance on those wheels!

[Thijs_Rallye 86 4 Cars]

4 hours ago, IRISH_MI16 said:

Because of the spoke design they might actually be OK. At worst a 2mm spacer will do it

 

That one word is exactly my problem . It might be ok, I hoped someone was running this actual combo on here.

 

Since I'd rather not use spacers at all it is going to be an expensive guess.

 

2 hours ago, petert said:

My experience with other 15" wheels is also radial clearance. I had to tweak the piping a tad. I like the front clearance on those wheels! 

Last time we trial fitted these calipers the inner side of the spokes of our std 1.9 alloy fouled the outside "corner" of the caliper. Only way to get them to fit them was to use 20mm spacers so at that time we opted for keeping our 307 HDi calipers and switch brake pad compound. The geometry and balance in the car is good as it is atm and I don't want to mess it up with massive spacers.

 

But since we are having heat issues at Zolder which is a heavy track for the brakes we are now re-investigating the 406 Brembo route. I hoped these Speedlines would clear them.

 

 

 

Edited August 15, 2018 by Thijs_Rallye

[IRISH_MI16 2]

Pro race 1.2 might be the way to go then. Can be got in an et you want and also easily available second hand

[welshpug 1,621]

do those come in 4x108?

 

I thought they were 4x100 renault group A/maxi fitment only, though prima racing recently had some replicas made.

[jackherer 543]

I thought they were 4x100 only too but Demon Tweeks have them listed in 4x108 so things must have changed - https://www.demon-tweeks.com/uk/speedline-corse-sl675-alloy-wheels-in-black-set-of-4-2000817/

[B1ack_Mi16 67]

Found back the old thread I made sometime regarding clearance on Brembos.

 

What I figured out was to use Renault Espace 3 brake discs, in addition to 6mm distance shim between mounting lugs and caliper, and a 3mm spacer between hub and disc, or 3mm distance ring between hub and wheel-bearing (I did the latter, but safety wise I kinda start to think it is safer with a 3mm spacer between the hub face itself and the brake disc.

 

At least this modification made it possible to run Speedline SL434s without any spacer.

Bonus is the disc has the right thickness also 28mm opposed to the 283x26 disc I used before.

 

 

[welshpug 1,621]

spacer/shim for the caliper isn't a concern as long as suitable bolts are used, better to do that than lose the spigot for centring the wheel.

[B1ack_Mi16 67]

I know.  I don't think it was possible to move the caliper 9mm inwards due to clearance between inner disc surface and the wishbone.

Hence a part of the offset had to be to move the disc a bit outwards.

 

I did chose to install stainless steel spacer rings between the wheel bearing and the hub though, so no problems with the spigot/centering, but I'm a bit more sceptical about the structural integrity of the solution compared to adding a small spacer between the disc and hub instead.

[wicked 103 3 Cars]

I think I spotted yesterday some of those Speedlines with Brembo's.

These are 16" and don't know the ET value, but there seems to be plenty of space.