XXR 531's

[csvt98]

Is anyone running 18x9.5 and 18x11 XXR 531's? I have a New Edge Mach 1 rear axles and I am just wondering how these would fit with their offset. +20mm rear and +35mm front offset. I want to run 295 fronts and 335 rears, realistically I will probably end up with 275 fronts. Any input would be appreciated!

 

[2DXTRM]

A member here, SIC9250, has the XXR 531 wheels on his IRS swapped SN95 Cobra. The IRS is about the same width (I think?) as the 99-04 SRA 8.8.

He went with a 18X 8.5 (20mm) and 18x11 (20mm).

http://www.svtperformance.com/forums/showthread.php?995972-IRS-SN95-18x11-quot-20mm-Fitment

 

[csvt98]

Ok sweet thank you! He is running 18x8.5 fronts though with +20 offset. Will I need +20 offset with 18x9.5's or run the +35 offset?

 

[2DXTRM]

Ok sweet thank you! He is running 18x8.5 fronts though with +20 offset. Will I need +20 offset with 18x9.5's or run the +35 offset?

The 35mm offset will suck the wheel in, potentially causing rubbing issues with the strut, especially being a 9.5 wheel. Can be corrected with a wheel spacer, put then you get into wheel studs and potentially sticking out past the fenders.
Using the Cobra R wheels for example, your typical 17 X 9 is a +24mm offset and a 5.94inch back space.

There is another guy on here that had Enkei RT-03 wheels in 18 X 9.5 up front on his 01 Cobra (looked like an 03). They were +27mm offset and he used a 265-35-18.

 

[2DXTRM]

I just remembered the 2000 Mustang COBRA R. Those cars had the 18 X 9.5 wheel with I believe a 22mm offset?

95riosnake had the silver and chrome versions on his 95 Cobra for a while with I believe a 275/35-18 tire on the front.

 

[csvt98]

Alright, I did a little research on offset and it looks like +20 is the way to go. Thank you for all the info!

 

[2DXTRM]

Alright, I did a little research on offset and it looks like +20 is the way to go. Thank you for all the info!

Dont forget to post some pictures when its done!

 

[csvt98]

I will be, it will be around the next month or so. I am doing front Coilovers and ARP wheel studs all the way around too.

 

[Tabres]

I'd bet any money that the 295's are going to rub like mad up front.

 

[csvt98]

I will be going 275's, 295's is a huge jump in price and I am doing this on a budget. If someone had 295's dirt cheap I would throw them on for kicks and giggles.

 

[csvt98]

18x9.5 and 18x11 Gloss Black XXR 531's have been ordered! I will be installing my Coilovers soon along with the wheels/tires. I also have an '03-'04 Mach 1 rearend under my SN95, this may be interesting. I run rear H&R Race springs with ISO's and my fenders are rolled. I cannot wait until they get here! (Coilovers are UPR's, 375lb 10").