North American Turbocoupe Organization

wheel sizes?
thundr306 Offline
Senior Member
How big of a wheel tire combo will fit under an 87? I would actually like to lower it approx 1" and run a 17" or 18".

1987 Turbo Coupe
306, FI, Hellion turbo kit, tubular front end, coilovers, Baer brakes

jmthunderbirdturbo Offline
Posting Freak
17's with low profile tires should work, will sacrifice some ride quality though, possibly even loss of performance, depending on how much $$$ you wanna spend on the tires.


1987 5.0 sport coupe, intake, exaust.
1987 tc, goldie, mods: mandrel bent downpipe to cat with turn down, gillis valve, 155 lph pump, kirban afpr, 100 psi fuel guage, handmade pvc cold air intake. 15.485 @89.22 (special thanks to turbocoupeturbo)(firedoctor)
1987 3.8, convertabird project car.
without disapointment, you cant appreciate victory, but victory would be nice every now and again.
APRIL 2018 - LOOKING FOR A NEW CAR. PM me if you have an 87-88 roller or cheap TF for sale.
1988 TC 5MT-Blue/Blue check-off car. resto-project.
2006 Honda Odyssey 5AT, baby-mobile.
2013 F-150, 5.0, 6AT, 4x4, snow white paint.

Glenn 88TC Offline
Posting Freak
Check out this TC.
NO TC and NO headaches.

Nate K Offline
Posting Freak
I'm running 245/40/18's, very little difference in ride quality, major difference in performance GAIN. My tire size is 1" smaller diameter than stock. If you want an education on calculating tire size, go the the Tire Rack. They have the formula's there plus you can look through the various tire specifications to see all the dimensions ie section width, tread width, diameter, etc

Calculating Tire Dimensions

Tire Size Information

Tire Tech Center - ton of valuable info

Each tire has a listing of Surveys, Reviews, Tests, Specs, Warranty. Browse tires by Brand,

Here's my Showroom Page with list of suspension mods and tires.
NATO Member
90 Mustang LX 5.0L Notch

Cars I wish I still owned:
69 Coronet 440
70 Torino 351C
79 Bronco 351M/400 on 35's
79 Trans Am 403 (6.6L)
88 Cougar XR7 5.0L
93 F150 Flareside Mark III Custom 5.0L

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