American muscle has a site like that, Together with that other site made it very easy! I reserched some of the years of mustangs, options and time of production had different tire options. Every year Ford does the reserch and see what people are doing to there mustangs and try to make their new cars be competitve. Anyways thought it would help.

 

yep been looking at amer mus. i'll run my 19's during nov to april, then the 18's april to nov. figure if i do 13000 miles a year i figure i could go 4 to 5 years with the two sets, use that time to save up for them lol thanks for help though.

 

Try this excel spreadsheet out. It does the calculations for you. Just fill in the proper boxes.

http://www.cherod.com/mustang/HowTo/...lculations.xls

 

ok thanks i'll look at it.

 

without going out and pulling my wheels anyone know the offset on the 2010 gt 19" wheels?

 

the chart shows slightly lower at 255/45/18 but wider than 245/45/19, is it so slight you won't notice the differ. in hieght, but you will see the width for sure?

 

so the wheels I'm thinking of going to are 18's, I have the 19's, amer. muscle recommends 255/45/18 cuz going all four wheels same size, I like to rotate tires, so if they are saying the below specs, should I even worry what my stock off set and such, these should fit I'm guessing, plus even going to 18's my tuner guy says I can still do 14" brakes with the 18's later as well

Style: Bullitt Finish: Chrome
Size: 18x9 Centercap Size: Large (2-1/2")
Back Spacing: 6.3" (161mm) Offset: +34mm (1.3")
Bolt Pattern: 5x4.5" (5x114.3mm) Fitment: 2005+ V6, GT,
Excludes Shelby GT500

 

yeah you could do the 14" brakes but you need to make sure the wheel has the clearance. Not all 18's do.

 

Right now not worried about brakes stock fine now, I'd most likely do ceramic calipars when time for pads. that chart works good though, just need to know my offset .

 

dont mean to hijack the thread sry but whats a good tire size for 20 inch shelby redlines 8.5 width front and 10 width back?? i dont want real low profile i just want it to look right and last long