Slicks

[Race82]

What slicks are people running on what wheel combos?

[bracer]

18x10 18x11 305/645/18 Pirelli DH scrubs

[MasterP]

18x11 square. Pirelli 305/645-18

[Race82]

Originally Posted by MasterP

18x11 square. Pirelli 305/645-18

how do you fit an 11" wheel up front?

[Race82]

Originally Posted by blackey

18x10 18x11 305/645/18 Pirelli DH scrubs

Any pics of how the 305 fits to the 18x10 upfront? did u end up running with 18x10 Et25 and a 10mm spacer?

[bracer]

18x10 ET25 spacer and no spacer. Works with 10mm spacer, but not needed with my suspension.

[MasterP]

Originally Posted by awbmw

how do you fit an 11" wheel up front?

-3.5 camber in front. 15mm spacer to clear the JRZ strut.

[Race82]

Originally Posted by MasterP

-3.5 camber in front. 15mm spacer to clear the JRZ strut.

ET25 up front and ET44 rear?

[MasterP]

Originally Posted by awbmw

ET25 up front and ET44 rear?

+25 EC7 all around.

[Race82]

Originally Posted by MasterP

+25 EC7 all around.

nice...i read in another post you do have some rubbing, mainly at full lock i think, is that still the case of have you tweaked it to prevent rubbing now?

[MasterP]

Originally Posted by awbmw

nice...i read in another post you do have some rubbing, mainly at full lock i think, is that still the case of have you tweaked it to prevent rubbing now?

It rubs full lock inside the wheel well. So if I'm full lock right the left front wheel touches the fender liner and full lock left the right front wheel Touches the fender liner. Contact is minimal, and I only even noticed it when I was swapping in new brake ducts. But I'm never full lock unless I have to make a tight maneuver in the paddock.

[F3IGHTY]

Have either of you ever driven the car without turning DSC off, even briefly on the road/freeway? I’m curious if the smaller height of the 305/645-18 and lack of stagger F to R triggers any issues with the TC system.

[bracer]

Sorry, can't say that I have.

[Continental02]

Looking at the sizes of the Pirelli slicks in 305/645/18 and see the overall diameter as 25.5 inches. Is this basically maxed out on the sidewall clearance? Do you think a 25.7 or a 26.3 would clear at all? Looking at a few different available sizes across different brands and wondering where the limit is.

[MasterP]

Originally Posted by F3IGHTY

Have either of you ever driven the car without turning DSC off, even briefly on the road/freeway? I’m curious if the smaller height of the 305/645-18 and lack of stagger F to R triggers any issues with the TC system.

I've driven it with DSC on MDM on. Doesn't affect it whatsoever.

[MasterP]

Originally Posted by Continental02

Looking at the sizes of the Pirelli slicks in 305/645/18 and see the overall diameter as 25.5 inches. Is this basically maxed out on the sidewall clearance? Do you think a 25.7 or a 26.3 would clear at all? Looking at a few different available sizes across different brands and wondering where the limit is.

Acree has used 305/660 which is taller.

I prefer the shorter OD tire. I can run my front end lower and I don't have to worry about rubbing the fenders under compression.

[F3IGHTY]

Originally Posted by MasterP

I've driven it with DSC on MDM on. Doesn't affect it whatsoever.

[Acree]

Originally Posted by MasterP

Acree has used 305/660 which is taller.

I prefer the shorter OD tire. I can run my front end lower and I don't have to worry about rubbing the fenders under compression.

Rubbed on stock perches

[Continental02]

Originally Posted by Acree

Rubbed on stock perches

So 26.3 OD rubs for sure. Anyone ever run Achilles slicks? I can get a set of 4 brand new for pennies in comparison to the NT01 I'm currently running or scrubbed Pirelli's. For the cost figure it's worth a shot and thinking they won't rub as it's 25.7 OD for the Achilles vs 25.5 for the 645 Pirelli.

[MasterP]

Originally Posted by Continental02

So 26.3 OD rubs for sure. Anyone ever run Achilles slicks? I can get a set of 4 brand new for pennies in comparison to the NT01 I'm currently running or scrubbed Pirelli's. For the cost figure it's worth a shot and thinking they won't rub as it's 25.7 OD for the Achilles vs 25.5 for the 645 Pirelli.

30/65-18 is too wide.

310mm section width on a 11" is pinched. They recommend 12" minimum.

I've run 30/65-18 Michelin GT's and they "fit" and cleared but you could tell they weren't optimal and they wore very quickly.

I should say they fit on my E92. I wouldn't try on my F80.

[Continental02]

Originally Posted by MasterP

30/65-18 is too wide.

310mm section width on a 11" is pinched. They recommend 12" minimum.

I've run 30/65-18 Michelin GT's and they "fit" and cleared but you could tell they weren't optimal and they wore very quickly.

I should say they fit on my E92. I wouldn't try on my F80.

Just noticed the recommend rim size, but for my own knowledge what am I missing here? Why the difference in approved rim size?

Achilles section width shows 310mm/12.20in on an approved 12+ rim
Pirelli 305/645/18 section width shows 12.3in on an approved 10+ rim

[MasterP]

Originally Posted by Continental02

Just noticed the recommend rim size, but for my own knowledge what am I missing here? Why the difference in approved rim size?

Achilles section width shows 310mm/12.20in on an approved 12+ rim
Pirelli 305/645/18 section width shows 12.3in on an approved 10+ rim

From my experience running the 30/65-18
Michelin's there was a noticeable difference in sidewall stiffness vs the Pirelli. The Michelin flexed considerably more. Not sure how much this plays into it but typically soft sidewall crammed on skinny wheel is not optimal.