Mulling over rim choices
- Thread starter Frozen Taurus
- Start date
Frozen Taurus
New member
That's what I can't wrap my mind around ....a 275 tire is fine in the wheel well on a 8.5 inch rim ....but as soon as you add 3/4 of an inch on each side of the rim there is no way it can fit :evilmad:
Talk to Joe (?) at Detroit Wheel & Tire. I am sure he can supply you with accurate weight information on any of these OEM wheels. Website is at https://detroitwheelandtire.com/contact and EBay store is http://stores.ebay.com/Detroit-Wheel-and-Tire.
Frozen Taurus
New member
shoman04 said:Here are my 275x40x20 on 20x8.5 they fit GREAT!!!!Frozen Taurus said:
What offset did you go with Shoman?
DRII said:
The lighter the better!
I would be very happy with 25-28 lb wheels on a car like that. 30 lbs would probably be my ceiling.
BTW, if you do a wheel like a 2 or 3 piece or a forged barrel, the math is not quite the same. There's a part that nobody measures (except perhaps race scientists) where even with a heavy center section, the barrel is very light. Thus the rotational intertia of the wheel is less. Same with rotary forged wheels like the TSW Nurburgring and Interlagos.
Here's a rule of thumb I was taught, and it has never left me:
Less weight = good
Less unsprung weight = better
Less rotational mass = even better
Less unsprung weight with less rotational mass = do it already
Here's some light reading, taken from a decidedly heavier reading article
http://www.camaroz28.com/forums/lt1-based-engine-tech-9/sprung-weight-vs-unsprung-wieght-vs-rotational-mass-63883/
Frozen Taurus said:
IDK what to tell you. The wheel contacted the strut during fitment check. Wheels aren't 10" wide when they say 10" wide. They are 11". It is an extra 1/2" per side for a bead to mount the tire. A 275 wide tire isn't 275mm wide. It is as wide as mounted on the wheel.
BTW Shoman should be running a +34 offset there, if memory serves.
Frozen just roll 20x9 on a 275/40-20 all around if you want. That'll work perfectly with the right offset. Immediately a wheel that comes to mind is the XXR 968 that is on its way here.
http://www.nlmotoring.com/XXR-968-Wheels-20x9-Flat-Black-p/96809652f.htm
No idea if it will fit over the brakes or not, but otherwise should be perfect. A +35 on a 20x9 is a sweet fit, and meets your goal standard back and front. Oh yeah you can look at the XXR 526 as well. Again don't know if it will fit the caliper, but otherwise should be good.
http://www.nlmotoring.com/XXR-968-Wheels-20x9-Flat-Black-p/96809652f.htm
No idea if it will fit over the brakes or not, but otherwise should be perfect. A +35 on a 20x9 is a sweet fit, and meets your goal standard back and front. Oh yeah you can look at the XXR 526 as well. Again don't know if it will fit the caliper, but otherwise should be good.
Frozen Taurus
New member
The 968 is a nice looking rim.
Frozen Taurus
New member
Well after lots of thought I have decided to go with a staggered fitment of 20x10 rear with 275/40 and 20x8.5 front with 255/45 in the TSW Panorama
Weight of 20x8.5 is 23 lbs
weight of 20x10 is 26 lbs
Weight of 20x8.5 is 23 lbs
weight of 20x10 is 26 lbs
D
DJE624
Guest
Way to go man! I'm sure you'll love them.
Bnoon (a Flex guy) sold them to me. I had to go find this thread to know what the offset is.Frozen Taurus said:shoman04 said:Here are my 275x40x20 on 20x8.5 they fit GREAT!!!!Frozen Taurus said:
What offset did you go with Shoman?
General Information / New wheels
« on: April 12, 2013, 12:32:53 PM »
I know wheels would normally be an aesthetic upgrade, but these are only 25.2 pounds each, so they're a performance upgrade as well! :biggrin: They are 20x8.5 36 offset black Bullitt Motorsport replicas from American Muscle. They are so much lighter than the regulat Bullitt wheels even, let alone lighter than the stock wheels. I want to see.if 2754020 will fit, but that will have to wait since my current tires were brand new when I got this rig in January. Pics once I get them on!
IS YOU FINAL CIRCOMFERENCE THE SAME?!?! If they are not the same you will have problem with the AWD going in to limp home mod at the track.Frozen Taurus said:
http://www.discounttiredirect.com/direct/infoTireMath.do
shoman04 said:
Side wall height is 0.25 mm less with the larger tire (this is the difference in the radius of the tire as compared to stock..... Should be of no consequence to the adaptive software.
275mm x 0.40 = 110mm sidewall height
245 x .45 = 110.25mm sidewall height 0.25mm = less than 100th of an inch change in radius of the tire
275mm -245mm = 30mm. 30mm/ 25.4 mm per inch = 1.18" wider tread
Frozen Taurus
New member
I go the idea right from the man himself that pioneered the stagger along with H&R springs Taurus project car BPD1151 .... he says it works and I trust him