Compatability of wheels, lowering and longtubes

[Dan89GT]

Hello, I am excited about my '05 GT that I recently purchased. Anyways, I want to put on some 20" wheels (10" width in rear), Ford Racing M-FR3-MGT suspension, JBA 6673S longtubes 3" collector and 6673SHC 3" H-pipe with catalytic converters. What is the widest tire that will fit without rubbing? Am I gonna have ground clearance issues with those headers and H-pipe?

 

[KOM TES]

What's the widest you can run, or should run?

What is the offset of your wheel?

I have 295/35/20 on a set of 20x10 w/+55 offset.

Persoally think that between 275-295 looks and works best.

 

[Dan89GT]

I'm not sure what offset, but I was considering the Foose Nitrous. That size sounds reasonable, I just don't want rubbing. Thanks.

 

[SpartaPerformance]

I have the M-2005-FR3 Ford handling pack that drops 1.5" and I have no clearance issues at all, being the MGT is only 1" drop I doubt you will.

 

[Dan89GT]

Do you have the JBA 3" long tubes and h-pipe with cats? What size tires do you have?