Question about: Summit 15X8 Star wheels - 2003-04 Mach 1 Registry Owners Club

3150Mach1 · 05-12-2008, 10:41 AM

I just ordered my Summit Star wheels for the rear.

http://store.summitracing.com/egnsea...3&autoview=sku

They are back ordered so I have time to change them. I am now wondering if I ordered the correct backspace. You can get a 5.50 or a 4.50 backspace. I can not find the thread where I was told which backspace to order in combination with a 3/8s spacer to fit over stock rear brakes.

I ordered:

SUM-521-5866PS
Rim Diameter (in): 15 in.
Rim Width (in): 8.00 in.
Backspacing (in): 5.500 in.
Offset (mm): +25.00mm

Should I have ordered the 4.5 backspace?

I did some searching and it looks like the 5.50 backspace is what I need but still would like some feedback to confirm.

05-12-2008, 10:41 AM	#1
3150Mach1 Love my Mach Join Date: Apr 2005 Location: Charlottesville, VA Posts: 13,678	Question about: Summit 15X8 Star wheels I just ordered my Summit Star wheels for the rear. http://store.summitracing.com/egnsea...3&autoview=sku They are back ordered so I have time to change them. I am now wondering if I ordered the correct backspace. You can get a 5.50 or a 4.50 backspace. I can not find the thread where I was told which backspace to order in combination with a 3/8s spacer to fit over stock rear brakes. I ordered: SUM-521-5866PS Rim Diameter (in): 15 in. Rim Width (in): 8.00 in. Backspacing (in): 5.500 in. Offset (mm): +25.00mm Should I have ordered the 4.5 backspace? I did some searching and it looks like the 5.50 backspace is what I need but still would like some feedback to confirm. __________________ 2003 slowmatic 11.105@117mph w/125 shot of Nitrous best to date Kooks LTsw/OR X, elect cutouts, JLT RAI w/C&L 85 MAH,1" Spacer,PP Lower intake,Accufab TB,160 T-stat,EF Cooling Mod,NX Kit,Mez Electric Water pump,SLP Linelock,FRPP 4.10s-Alum Dif Cover-Alum Driveshaft & SL, Steeda Bumpsteer,MM Alum rack bushings,Deep Alum Tranny pan,Predator,Steeda AUCAs,MM ALCAs, Dspecs,MM CC plates & FLSFCs,MRT Guage cluster,AEM WB,MRT hood struts,Seq TLs, carbon fiber hood/trunk/Cobra wing,220 amp alt Last edited by 3150Mach1; 05-12-2008 at 10:59 AM.

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