Rimwidth,
02-04-2006, 07:30 PM
#2
5th Gear Member
Join Date: Nov 2005
Location:
Posts: 2,227
RE: Rimwidth,
From www.FordRacing.com.
M-1007-U1885P*
Optional wheel on 2006 Mustang GT
Fits all 2005-06 Mustangs
Polished aluminum finish
5-lug 4.5" bolt circle
6.295" backspacing
18" x 8.5" wide
Includes Ford Racing center cap
**** By the way how much of an option $$$ are these?
M-1007-U1885P*
Optional wheel on 2006 Mustang GT
Fits all 2005-06 Mustangs
Polished aluminum finish
5-lug 4.5" bolt circle
6.295" backspacing
18" x 8.5" wide
Includes Ford Racing center cap
**** By the way how much of an option $$$ are these?
02-05-2006, 02:36 PM
#4
5th Gear Member
Join Date: Nov 2005
Location:
Posts: 2,227
RE: Rimwidth,
gregsdart: Yeah $825 is no deal. They retail at $219. Ford gives you practically no value for the 17" bullits that they retail for $140. Unreal, huh? Try to get a pic from someone who has the rims you are looking for and know ahead of time how much they will stick out over stock (OEM bullit 8" @ 45mm offset). Stock setup kicks up enough sand, etc especially in the rear, already. Have fun... ...Jim
02-05-2006, 07:37 PM
#5
1st Gear Member
Thread Starter
Join Date: Feb 2005
Posts: 144
RE: Rimwidth,
Thanks, Jim. By the way, can you give me the lowdown on the "metric" system of backspacing? Is it simply so many MM off dead center? With the inchs of offset, at least i had an idea of where i was,,,,,,,,,,,,,
02-05-2006, 08:22 PM
#6
5th Gear Member
Join Date: Nov 2005
Location:
Posts: 2,227
RE: Rimwidth,
Greg: the following I wrote in another thread. It should answer your questions. If not just hollar.
An inch is about 25mm. But here's a conv chart:
http://www.voltplastics.com/in_mm.html
Great info on offset and backspacing at:
http://www.rsracing.com/tech-wheel.html
In there you'll see as they say: Rear spacing or back spacing is the distance from the backside of the wheel mounting pad to the outside of the rim flange. The offset is the distance from the centerline of the wheel to the mounting surface of the wheel.
Anyway the stock bullit has 6.295" backspacing and a positive offset of 45mm. (Positive offset: When the back of the wheel mounting pad is closer to the street side of the wheel; here the mounting surface is outboard of the rim centerline.
If for example you used 10" rims with the same 45mm offset (mounting face in same relative postion to centerline as the stock bullit rim) then with the two inch greater rim width you are putting 1 inch more outward of your wheel mounting pad and 1 inch more inward of your wheel mounting pad. Now if you only had a 20mm offset for example that 25mm less (approx 1 inch) will be all outward movement of the rim position (just like you had thrown a 1 inch spacer on there). Now you're out 2" which to me is not acceptable, at least looks wise. Because of a special paint scheme on my GT, and I see how debris already kicks up with stock setup I have gone with FRPP 17x8 chrome bullits. ...just don't want the tires outward anymore than stock; but that's me. Up to an inch seems reasonable I guess; up to you.
As far as the rims clearing the calipers that has to do with the spoke design and how it is built with respect to the bolt face. 05-06 GTs require more clearance than most so you have to know that the rims are proven test fit for the 05-06 GT or order one and test it (before mounting any tire) yourself. OEM bullits come incredibly close to the calipers.
Hope this helps. ...Jim
PS. just took pics today. First ever posted in this forum right here; more to follow.
[IMG]local://upfiles/24316/63CE9934C1824D4BBF116642F4737D79.jpg[/IMG]
An inch is about 25mm. But here's a conv chart:
http://www.voltplastics.com/in_mm.html
Great info on offset and backspacing at:
http://www.rsracing.com/tech-wheel.html
In there you'll see as they say: Rear spacing or back spacing is the distance from the backside of the wheel mounting pad to the outside of the rim flange. The offset is the distance from the centerline of the wheel to the mounting surface of the wheel.
Anyway the stock bullit has 6.295" backspacing and a positive offset of 45mm. (Positive offset: When the back of the wheel mounting pad is closer to the street side of the wheel; here the mounting surface is outboard of the rim centerline.
If for example you used 10" rims with the same 45mm offset (mounting face in same relative postion to centerline as the stock bullit rim) then with the two inch greater rim width you are putting 1 inch more outward of your wheel mounting pad and 1 inch more inward of your wheel mounting pad. Now if you only had a 20mm offset for example that 25mm less (approx 1 inch) will be all outward movement of the rim position (just like you had thrown a 1 inch spacer on there). Now you're out 2" which to me is not acceptable, at least looks wise. Because of a special paint scheme on my GT, and I see how debris already kicks up with stock setup I have gone with FRPP 17x8 chrome bullits. ...just don't want the tires outward anymore than stock; but that's me. Up to an inch seems reasonable I guess; up to you.
As far as the rims clearing the calipers that has to do with the spoke design and how it is built with respect to the bolt face. 05-06 GTs require more clearance than most so you have to know that the rims are proven test fit for the 05-06 GT or order one and test it (before mounting any tire) yourself. OEM bullits come incredibly close to the calipers.
Hope this helps. ...Jim
PS. just took pics today. First ever posted in this forum right here; more to follow.
[IMG]local://upfiles/24316/63CE9934C1824D4BBF116642F4737D79.jpg[/IMG]
