need help with tire size

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Dec 27, 2013 | 01:27 PM

grandpajay

Thread Starter

1st Gear Member

Joined: Feb 2011

Posts: 68

From: Maryland

need help with tire size

I need help picking the correct tire size for some new wheels. I have a 2006 GT that is dropped 1.5" on Ford Racing K-Springs. I'm looking to buy a set of Jegs Sport Lite Cast Aluminum wheels, 15x8 up front and 15x10 in the rear. what size tires do I need? I'm looking for street performance tires if anyone just wants to lay down 2 links for me. otherwise tire sizes will do just fine

I'm looking to really fill up the rear wheel well

Dec 27, 2013 | 11:19 PM

Fox Fader

2nd Gear Member

Joined: Feb 2012

Posts: 176

From: Columbus, GA USA

Why not go with a more modern size?
If not, Google the miata tire size calculator and use it.

18
Fr 255/45
Rr 275/40
19
Fr 245/45, 255/40
Rr 275/40, 285/35
20
Fr 245/40, 255/35
Rr 275/35, 285/30

Dec 27, 2013 | 11:30 PM

JThor

2nd Gear Member

Joined: Jul 2011

Posts: 289

From: Colorado

Will 15" wheels fit over your front brakes? 17" was OE on the GT. I don't think 15's will fit.

Your best selection of performance street tires will be in 18" right now.