TIRE HELP

[juvehab]

Was pondering putting on 19 x 9.5 +44 offset on my 06 GT. what size tire is recommended? would like to be a square setup and the car is lowered on pro kit.


Thanks in advance

[Stephen06GT]

I wouldn’t go any bigger than 18s on an 06 as the ride and handling tend to fall off. If you haven’t decided on rims yet, my 18x10 Roush wheels will be for sale once spring rolls around.

[Laffs]

What will the car be used for? You just want to fill up the wheel wells or want something with a low pro look? Close to factory rolling diameter needed to keep all the gauges in line or are you able to account for a large or smaller diameter?

If you wanna cram as much sidewall and width under the car as you can I say go with a 275/40R19 which is about 1/2" taller than the OEM 235/55R17, or 285/35R19 which is about 1/3" shorter than oem. Both will have pretty squared off sidewalls and fill the wheels wells.

If you want the more modern looking fitment with a rounded sidewall profile I'd say a 265/40R19 would be the ticket and would be basically the same rolling diameter as stock.

[juvehab]

What will the car be used for? You just want to fill up the wheel wells or want something with a low pro look? Close to factory rolling diameter needed to keep all the gauges in line or are you able to account for a large or smaller diameter?

If you wanna cram as much sidewall and width under the car as you can I say go with a 275/40R19 which is about 1/2" taller than the OEM 235/55R17, or 285/35R19 which is about 1/3" shorter than oem. Both will have pretty squared off sidewalls and fill the wheels wells.

If you want the more modern looking fitment with a rounded sidewall profile I'd say a 265/40R19 would be the ticket and would be basically the same rolling diameter as stock.

Actually I was leaning towards 275 40 19 if I do a square set up right now I'm 20" Roush wheels staggered that i was looking to move away from.

[juvehab]

I wouldn’t go any bigger than 18s on an 06 as the ride and handling tend to fall off. If you haven’t decided on rims yet, my 18x10 Roush wheels will be for sale once spring rolls around.

Thanks I have 20's now that I was thinking of moving away from mine are also the Roush wheels.

[ZR]

Apex sell an 18" that will even clear 6 piston Brembos / 15" rotors.
Pic is of my own '05 / Brembos.

[fast Ed]

275/40R19 is good all around on a stock ride height S197, but on a lowered car you may encounter some rubbing on the front with that much width and tire diameter. Additional negative camber might give enough clearance if needed, but not guaranteed. I had 285/35R19 on 10" +40 all around on my 07, but it also had about 2 degrees of negative camber as it didn't get a ton of miles every summer.

As mentioned above, 265/40R19 would be a good compromise size if you like the tire diameter large enough to help fill the fender openings.


cheers
Ed

[Uncle Buck]

I ran 275s on all 4 lowered without any rubbing.

I'm not up on my tire options but there was a time when 18" had way more options than 19" and were generally cheaper.

[fast Ed]

Al, what profile were yours? On the 20" they were 30s or 35s? 275/35R20 would be similar diameter to the 275/40R19 that the OP would like to use.

[Uncle Buck]

Pretty sure I ran 275/35/20 Falken 452s for a couple years

[juvehab]

275/40R19 is good all around on a stock ride height S197, but on a lowered car you may encounter some rubbing on the front with that much width and tire diameter. Additional negative camber might give enough clearance if needed, but not guaranteed. I had 285/35R19 on 10" +40 all around on my 07, but it also had about 2 degrees of negative camber as it didn't get a ton of miles every summer.

As mentioned above, 265/40R19 would be a good compromise size if you like the tire diameter large enough to help fill the fender openings.


cheers
Ed

I've been searching the web I see quite a few guys running the 275 40 with no rubbing on lowered cars.

[fast Ed]

Good to know ... keep in mind that wheel offset and the amount of suspension drop come in to play when you're trying to max things out. Make sure you're comparing apples to apples before spending your dough!

[hammerhead]

275/40R19 is good all around on a stock ride height S197, but on a lowered car you may encounter some rubbing on the front with that much width and tire diameter. Additional negative camber might give enough clearance if needed, but not guaranteed. I had 285/35R19 on 10" +40 all around on my 07, but it also had about 2 degrees of negative camber as it didn't get a ton of miles every summer.

As mentioned above, 265/40R19 would be a good compromise size if you like the tire diameter large enough to help fill the fender openings.


cheers
Ed

you don't hear much talk about negative camber - there was a time when most cars had negative camber - most people today think in terms of positive camber but with a wider tire choice negative camber can make it work better overall rubbing or no rubbing...

[Joronto]

I was just about to make a post asking a similar question, I have a 2014 v6 Manuel, Stock size is 225/60/r17 , what would be an ideal upgrade for myself? Can i just go straight to 18's with a lower profile?

[fast Ed]

255/45R18 or 275/40R18 would be common choices for a square setup, depending on what wheel width you get.


cheers
Ed

[Stephen06GT]

255/45R18 or 275/40R18 would be common choices for a square setup, depending on what wheel width you get.


cheers
Ed

Those are the two sizes I’ve run on Ol Paint. The 255s on a 8.5” wide rim and the 275s on a 10” wide rim.

[juvehab]

so after some research I bit the bullet on 275 40 19 fingers crossed. ill keep everyone updated whether this was a good idea or a total fail on my part.

Thanks for all the responses.

[Marcuskeeler]

I made the mistake of buying 20" rims when I installed my Gran Turismo Brembo setup. They were the only rims i found locally that cleared the calipers in both offset and rim size. I wasn't really taken with the look of them, even though they were a relatively subtle design, but as time went by I went through all the stages.. Like, mild dislike, dislike, denial, hatred, anger and finally, after 2 years, pathological hatred. Finding rims to clear the brakes turned out to be harder than I had thought, The Gran Turismo is a direct-from-Brembo product and not to be confused with the Ford kit which uses smaller calipers and a different mounting method (which tucks the calipers in more). Finally I essentially gave up and got some 18" NOS GT500 Rims, they didn't look so bad after I had them painted Flat Black. Clearance is tight to say the least but there's never been contact and the car looks waaaaaaay better with the smaller rim. 285/35/18

I think that 19's would be nice too but with a shallow tire wall size to avoid fender interference.

[ZR]

If your ever contemplating another wheel chance, take a look at Apex Racing. They make a smooth barrel 18 that clears big brakes. Have them on my '05 + set here ready to install on my '20 PP2. In case you'd like to see in person, I had a set of the last three.


https://trackmustangsonline.com/attachments/49101717501_4e8fe932e8_o-png-png.14003/