18s and 19s on 2007 GT

This is my 07 with 18”x10” 275’s all around. Lowered 1.5” on FRPP K springs


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FredB66 said:

I just installed AM Bullitt 18x9s with 255/45s and 19x10s with 275/40s. Prior to purchasing I looked and couldn't find pics of this setup so I thought I'd post it for anyone interested. The car is lowered 1.5" front and rear. Overall, I'm happy with the stance though I think the rear needs to drop a little more.

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Looks great!

dark steed said:

This is my 07 with 18”x10” 275’s all around. Lowered 1.5” on FRPP K springs


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What offset are your 18"x10"s? I'm also assuming your 275's are 275/40/18's

06 T-RED S/C GT said:

What offset are your 18"x10"s? I'm also assuming your 275's are 275/40/18's

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Yes, 275/40/18 Nitto tires. I don’t remember the offset, I got them when American Muscle sold them. It said for rear only but they fit all the way around. I think the offset was around 24 or something like that.
I got them on clearance for $90 each…


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Hard to know what the offset is for certain, but if AM recommends for rear use only? my guess is probably between +45mm/+52mm.. 24mm-42mm offset is usually designed for up front? In the end, all that matters is they all fit all the way around.. I run 275/40/18" Firestone Firehawk Indy 500 tires on all 4 corners mounted on "OEM" 2007-09 Shelby GT500 wheels in 18"x9.5" with 45mm offset both front and rear..

Suspension is also lowered with Eibach Pro Springs 1.3" front/1.5" rear paired with Koni yellow adjustable dampers, GT500 strut mounts and BMR adjustable panhard bar.

Meanwhile, really like the look and stance of your wheel and tire setup.. Congrats