Slicks

[Race82]

So with -3.5 camber on Bilstein Clubsports if I want to run 305/645-18 DH Pirelli Slicks up front with full clearance the best solution would be an 18x10.5 ET15?

[bracer]

I don't think that will clear. A 25mm barely clears on a 10" Your adding 6.25mm for the 0.5" and then subtracting 10 so 3.75mm more to try and clear the clubsports. I think you will need at least a 5mm spacer with that. You will have plenty on the outside at -3.5, so even a 10mm offset would be fine. Running a small spacer isn't the end of the word either though.

[MasterP]

Originally Posted by awbmw

So with -3.5 camber on Bilstein Clubsports if I want to run 305/645-18 DH Pirelli Slicks up front with full clearance the best solution would be an 18x10.5 ET15?

I do not know the answer to this as the spacer no spacer/wheel offset in front depends on the position of the lower perch. But 18X10 will work with a 10-12mm spacer if you're using 18X10+25 and coilovers that have the lower perch about where the top of the tire is (I've done this). For 10.5-11 you're best off with a 15mm. But you'll likely be rubbing the front liner at full lock.

[Continental02]

Anyone tried Hoosier R7s yet? I don't have any experience with them before and from what I've read they run a little wide. Which sizes should I be looking at for my setup?

I'm running 18x10 +25 and 18x11 +44. Thinking 275/35/18 and 315/30/18. Anyone run this before?

[mcvaughan]

Originally Posted by Continental02

Anyone tried Hoosier R7s yet? I don't have any experience with them before and from what I've read they run a little wide. Which sizes should I be looking at for my setup?

I'm running 18x10 +25 and 18x11 +44. Thinking 275/35/18 and 315/30/18. Anyone run this before?

I've talked to Apex about R7 sizing, and they said the 315 will be too wide for 11" wheel.

Guess I'll be sticking with NT01s for the time being.

[MasterP]

Originally Posted by Continental02

Anyone tried Hoosier R7s yet? I don't have any experience with them before and from what I've read they run a little wide. Which sizes should I be looking at for my setup?

I'm running 18x10 +25 and 18x11 +44. Thinking 275/35/18 and 315/30/18. Anyone run this before?

40mm is a lot of stagger. I would not run more than the OEM stagger if I was staggering. 295-305 is optimal on an 11"

on a 10" 275-285 is a good size.

[mcvaughan]

Has anyone tried R7s in 285/645 and 305/645 on 10s and 11s? The Hoosier fitment guide seems to say it will be fine.

[CPWINCH]

Originally Posted by mcvaughan

I've talked to Apex about R7 sizing, and they said the 315 will be too wide for 11" wheel.

Guess I'll be sticking with NT01s for the time being.

I run a 315 hoosier R7 on a 11 inch wheel and its perfect. Theres a thread where apex actually recommends this set up

Link: https://www.apexraceparts.com/blog/f...11-et44-wheel/

Read the above for all big tire help

[mcvaughan]

Originally Posted by CPWINCH

I run a 315 hoosier R7 on a 11 inch wheel and its perfect. Theres a thread where apex actually recommends this set up

Link: https://www.apexraceparts.com/blog/f...11-et44-wheel/

Read the above for all big tire help

I wouldn't consider anything larger than a 305, personally. I think the 285/305 is a good balance.

[CPWINCH]

Originally Posted by mcvaughan

I wouldn't consider anything larger than a 305, personally. I think the 285/305 is a good balance.

its a 10mm difference, which means 5mm inner and outer. Not that big of a difference. 285/305 is a great set up but not many tires are offered in that size for 18s.

My street set up is 275/35/18 and 305/35/18. Very close to OEM diameters.

[///Mobbin]

I've got Apex SM-10's on order in 18x10 et25 and 18x11 et44, curious if anyone has run Pirelli DH 275/645/18 and 305/645/18 with this setup?

[mcvaughan]

Originally Posted by CPWINCH

I run a 315 hoosier R7 on a 11 inch wheel and its perfect. Theres a thread where apex actually recommends this set up

Link: https://www.apexraceparts.com/blog/f...11-et44-wheel/

Read the above for all big tire help

I did read this article and I came away with them saying the 305 was the best fit.

[mcvaughan]

Originally Posted by ///Mobbin

I've got Apex SM-10's on order in 18x10 et25 and 18x11 et44, curious if anyone has run Pirelli DH 275/645/18 and 305/645/18 with this setup?

No, but sounds like a workable setup. Let us know if you spring for the scrubs.

[Continental02]

Originally Posted by ///Mobbin

I've got Apex SM-10's on order in 18x10 et25 and 18x11 et44, curious if anyone has run Pirelli DH 275/645/18 and 305/645/18 with this setup?

You're leaving a lot of tire on the table running the 275 up front. You can run 305s up front no problem with that setup. I have the same wheels and offsets and everything clears perfect with 305s up front with a 10mm spacer to clear the suspension.

[trackm4]

Originally Posted by Continental02

You're leaving a lot of tire on the table running the 275 up front. You can run 305s up front no problem with that setup. I have the same wheels and offsets and everything clears perfect with 305s up front with a 10mm spacer to clear the suspension.

Continental02 can you post details on your setup please? ..

[bracer]

Remember the Pirelli's run pretty small. I just switched to Hoosier 295/315 (A7) and they dwarf the Pirelli's.

[trackm4]

Originally Posted by blackey

Remember the Pirelli's run pretty small. I just switched to Hoosier 295/315 (A7) and they dwarf the Pirelli's.

So no rubbing with your 295/315 Hoosier? What wheels do you have them on? I have Fl-10s with ET25/ET44 on their way.. I'm on JRZ RS Pros with very aggressive camber.

[bracer]

Originally Posted by trackm4

So no rubbing with your 295/315 Hoosier? What wheels do you have them on? I have Fl-10s with ET25/ET44 on their way.. I'm on JRZ RS Pros with very aggressive camber.

Apex 18x10 ET25 and Apex 18x11 ET44

Fronts are very tight and would probably rub if lowered a ton.

[Continental02]

Originally Posted by trackm4

Continental02 can you post details on your setup please? ..

Apex SM10 and FL5, 18x10 ET25 and 18x11ET44. The use of a spacer with these offsets up front is just to clear the inside of the tire making contact with your suspension. For my setup I use a 10mm spacer and it works perfectly.

Pirelli slicks run quite a bit smaller, see the photos for an example.

4 305/645/18 Pirelli slicks stacked up next to 4 305/650/18 Continental Slicks

The 305 Continentals are no problem in the rear, but up front they stick out significantly. They bulge more on the tire when mounted so I needed to use more of a spacer to get the inside to clear the spring, which then only pushes the tire out even further to an unworkable poke, even with -3.7 camber. The 650 sidewall rubs on the fender liner too so it's not workable all around unless you do some serious fender work.

I don't think you really need more tire than the 305 (295 realistically right?) Pirelli in the rear, at least for me personally. I never struggle with rear grip even with an aggressive E85 tune making 560whp/wtq.

[trackm4]

Thank you blackey and Continental02

[mcvaughan]

Originally Posted by blackey

Apex 18x10 ET25 and Apex 18x11 ET44

Fronts are very tight and would probably rub if lowered a ton.

How much tire bulge?

[///Mobbin]

Originally Posted by mcvaughan

No, but sounds like a workable setup. Let us know if you spring for the scrubs.

Originally Posted by Continental02

You're leaving a lot of tire on the table running the 275 up front. You can run 305s up front no problem with that setup. I have the same wheels and offsets and everything clears perfect with 305s up front with a 10mm spacer to clear the suspension.

Just ordered a set! Went with 285/645/18 and 305/645/18, will likely adjust sizes after I get suspension installed and see what these look like. Either way, can't wait!