20 inch Racmonolite aftermarket wheels - Page 62

Zapper · 7th September 2006, 19:16

Quote:

Originally Posted by bmwbonehead

Jamie, Zapper, any issue with your nonlowered cars?

No rubbing on my car, but I'm running the 285 rear and on stock suspension.

bonehead · 7th September 2006, 19:22

Quote:

Originally Posted by Zapper

No rubbing on my car, but I'm running the 285 rear and on stock suspension.

Forgot you went with that size combo. James, when are you going to have your set up done?

JamesInLV · 7th September 2006, 19:37

Setup should be done on Tuesday or Wednesday next week for me. Wheels are supposed to arrive Monday, tires on Monday or Tuesday. I'll probably have the tires/wheels on first, then get the H&R springs installed as soon as I can get an appt for it after that.

Edit: One special factor for my tires. Tirerack has received limited fitments in the ContiSportContact 3 (yes, THREE) tire, including 305/25. I had them ship me those for the rear along with the Contact 2 for the front. Not sure if there will be any measurement differences since Continental hasn't provided any fitment information on their website, so that could also be a difference on whether mine rub or not, before or after the springs go in.

andrewsherman · 7th September 2006, 20:32

Quote:

Originally Posted by JamesInLV

Setup should be done on Tuesday or Wednesday next week for me. Wheels are supposed to arrive Monday, tires on Monday or Tuesday. I'll probably have the tires/wheels on first, then get the H&R springs installed as soon as I can get an appt for it after that.

Edit: One special factor for my tires. Tirerack has received limited fitments in the ContiSportContact 3 (yes, THREE) tire, including 305/25. I had them ship me those for the rear along with the Contact 2 for the front. Not sure if there will be any measurement differences since Continental hasn't provided any fitment information on their website, so that could also be a difference on whether mine rub or not, before or after the springs go in.

I have heard the the '07s were going to be fitted with the 3's. Does anybody know if this is true? Any word on how they will compare with the PS2s?

shep01 · 7th September 2006, 21:35

Quote:

Originally Posted by PFDSOTM

It's definitely the sound of tires rubbing...I had it in my previous M3. However, If you don't plan to use lower springs, you shouldn't have a problem...the rubbing is slight but noticeable.

I cannot imagine them rubbing but, it may well be that you to add more negative camber to the alignment. BMW notoriously dials in alignment settings that propmote understeer. You should max out whatever available negative camber is available from the factor suspension - especially with that larger rubber. Ideally, the car will handle far better with 1.5 degrees or more of negative camber. That will also eliminate any slight rubbing you may be having.

Can you get me the factory specification for their alignment?

Thanks

shep01 · 7th September 2006, 21:40

Quote:

Originally Posted by JamesInLV

Setup should be done on Tuesday or Wednesday next week for me. Wheels are supposed to arrive Monday, tires on Monday or Tuesday. I'll probably have the tires/wheels on first, then get the H&R springs installed as soon as I can get an appt for it after that.

Edit: One special factor for my tires. Tirerack has received limited fitments in the ContiSportContact 3 (yes, THREE) tire, including 305/25. I had them ship me those for the rear along with the Contact 2 for the front. Not sure if there will be any measurement differences since Continental hasn't provided any fitment information on their website, so that could also be a difference on whether mine rub or not, before or after the springs go in.

When you lower the car you effect the camber in the wrong direction! You also likely still have a factory alignment which is ordinarily lousy specs that encourages understeer. If you can get me the factory specs I can give you a proper baseline alignement set-up that will both wear your tires well and consider the lowered car and the larger/wider rubber. I will also give you some agressive alternatives for those who partake in more "spirited" driving. I have been doing racecar alignments, myself, for a long time. I do all my alignemnts with string, not computer, and I have years of parameters and specs as a resourse to draw upon.

Rolling the fenders, which I do commonly on most of my cars, is always an option but let's first see what your rear camber looks like.

PFDSOTM · 7th September 2006, 22:11

Quote:

Originally Posted by shep01

I cannot imagine them rubbing but, it may well be that you to add more negative camber to the alignment. BMW notoriously dials in alignment settings that propmote understeer. You should max out whatever available negative camber is available from the factor suspension - especially with that larger rubber. Ideally, the car will handle far better with 1.5 degrees or more of negative camber. That will also eliminate any slight rubbing you may be having.

Can you get me the factory specification for their alignment?

Thanks

Shep,

I'm out of town this weekend, I can get it to you Monday. Hopefully this can fix the problem....thanks.

bonehead · 7th September 2006, 22:19

Quote:

Originally Posted by JamesInLV

Edit: One special factor for my tires. Tirerack has received limited fitments in the ContiSportContact 3 (yes, THREE) tire, including 305/25. I had them ship me those for the rear along with the Contact 2 for the front. Not sure if there will be any measurement differences since Continental hasn't provided any fitment information on their website, so that could also be a difference on whether mine rub or not, before or after the springs go in.

I take it that the Conti 3's don't come in the 275/30's (yet)?

ChuckD · 7th September 2006, 22:32

Quote:

Originally Posted by PFDSOTM

Shep,

I'm out of town this weekend, I can get it to you Monday. Hopefully this can fix the problem....thanks.

Forgive me if you mentioned it already. But did your installer check alignment or realign the car after he installed the springs? If not then Shep is on to somthing in that.. you could have even more positve camber than even the factory aligment specifies. Shep can easily get you a street performance alignment specs based off the stock specs that will enhance the car yet not overly wear the tires.

Also.. how does the car handle with the new springs? Would you say it is less or more apt to roll than it did with the factory springs installed? I am wondering what the spring rates are in comparison to the stock springs.

Looking at your pictures I can not see how you are rubbing unless the new springs compress too far in combination with an already overly postive camber setting. Remember as you take that aggressive right hand turn the tendancy of your left wheels will be to have the tops lean towords the fender lip.

To be clear.. not that the springs are the problem, but they could exacerbate an already overly positive camber setting if it was not compensated for after the spring installation.

JamesInLV · 7th September 2006, 22:38

Quote:

Originally Posted by bmwbonehead

I take it that the Conti 3's don't come in the 275/30's (yet)?

Nope...just the 305/25 for the rear. The just started receiving inventory, so it's only a matter of time (weeks, a month or two?) before they have a wider inventory in the Conti 3.