15x7/7.5/8/9 6UL comparison pics

949Racing · Postby **949Racing** » Thu Nov 18, 2010 8:22 pm

Some of you may be deciding between the 6UL variants so I though I'd post these images to show the differences. Exact same car. Just jacked it up and swapped wheels. All inflated to 30psi.

The 15x7 & 15x7.5 have just finished production. MX5Centre should have their shipment late December.
For maximum performance from a given radial tire, you want to choose a wheel that is equal to or slighter greater than section (casing) width. Not to be confused with tread width. If steering response and ultimate grip is not as important as ride quality, choose a narrower wheel. For low to mid speed handling and grip, 225/45 on the 9 is fastest. For a near stock power level car on very high speed road courses, some times a 205/50 on an 8" wheel will provide the same lap times as a 225/45 on 9 but the 205 on 8 will have a tad more top end speed and be a better wheel to wheel race combination. Past about 140whp or so, the 225/45 on 9 wins our regardless of track or road.

The car in the pictures is my daily driver. 95 with 01 bottom end, ported BP4W head, AEM (about 155whp with catalyst), 6 speed, Xida Club Sports on and of course, 15x9's with Hankook RS3's.

Full resolution versions:
http://949racing.com/server/95/15x75_6UL_205FR.jpg
http://949racing.com/server/95/15x75_6UL_225FR.jpg
http://949racing.com/server/95/15x7_6UL_205FR.jpg
http://949racing.com/server/95/15x8_6UL_205FR.jpg
http://949racing.com/server/95/15x9_6UL_225FR.jpg

In daily driver configuration

project.r.racing · Postby **project.r.racing** » Thu Nov 18, 2010 9:08 pm

Awesome to hear the 15x7/7.5s are finally finished. Better late than never. Nothing better in life, handing over cash and waiting 3 months longer than promised.

zorak · Postby **zorak** » Thu Nov 18, 2010 10:42 pm

should have gone 15x8 then

15x8 205/50 combo ftw

Mr nanotech · Postby **Mr nanotech** » Mon Nov 22, 2010 4:16 pm

I'm loving the firment of the 9's and the amount of dish. Out of curiousity though, how much camber are you running to make them fit?

949Racing · Postby **949Racing** » Mon Nov 22, 2010 5:14 pm

nanotech wrote:I'm loving the firment of the 9's and the amount of dish. Out of curiousity though, how much camber are you running to make them fit?

Requires coilovers and roll front fender lips, regardless of camber.

I don't align a car just to get a particular tire to fit. I align and corner weight it to make it fast. Wherever they end up is wherever they end up.
Some race alignment info from our website