PDA

View Full Version : Tires for 16" Wheels on ST185



93celicaconv
04-24-2016, 12:50 PM
My son has a 1990 All-Trac, and 16" wheels from a 2005 Celica GT-S. He would like to put 225/50R16 tires on those wheels for the 1990 All-Trac. I know they are larger than stock diameter. Will they fit properly on the All-Trac without any kind of modification requirements?

METDeath
04-24-2016, 02:06 PM
A few of us run 225/45R17 on a 17x8+35 based on that I think you should be okay.

Biggest issue would be if he slammed it, and hasn't rolled the rear fenders, maybe?

93celicaconv
04-24-2016, 10:12 PM
A few of us run 225/45R17 on a 17x8+35 based on that I think you should be okay.

Biggest issue would be if he slammed it, and hasn't rolled the rear fenders, maybe?

The diameter & tread width of 225/45R17's would be very close to those of 225/50R16. For those running 225/45R17, has everyone rolled the rear fender seams? I was hoping not to do that.

METDeath
04-25-2016, 01:37 AM
I haven't, but I run a little high in the back with stiff damper/springs.

John has rolled his, I think Joey did on his 17x9+30 wheels.

Is the All-trac lowered will be the big point. I know if I ran 17x8 on my coupe with the TRD springs it would have required the rolling of the rear fenders.

celica91gts
04-26-2016, 01:05 PM
i think you will be fine. all tracs have the wide body fenders after all.

Murgatroy
04-26-2016, 03:31 PM
The offset on the 7th Gen GT-S wheels will cause them to tuck on the rear, they usually require 25mm spacers to bring them flush on the widebody rears. Coupes are different as they don't have as wide a rear.

As has been done a few times though, widebody front fenders on a narrowbody, will match all the way around without spacers. As shown on Chaos.

METDeath
04-26-2016, 10:15 PM
Every wheel is tucked on the back of a GTS/All-trac because the fender is wider, but the wheel placement is identical as the narrow body. I attribute this to the existence of the narrow body All-trac, as it is easier to design one nearly universal set of components with slightly differing body panel designs.

So, in short, always run a hub centric 25mm spacer in the back if you want the wheels to look closer to flush.

93celicaconv
04-28-2016, 12:38 AM
Well, we will have the 225/50R16 tires put on the 7th Gen GT-S 16"x6.5" wheels tomorrow. The gentleman that did some measurements did say height will be OK, width to the fenders OK, but the rear's will be close to the struts, which aligns with some thinking here.

If we want the rears spaced out a bit, where would one get the spacers? 25mm (1" seems like quite a bit of shift though - do they make 12-15mm spacers?

Will let you know what it seems like after install later this week.

METDeath
04-28-2016, 08:00 PM
H&R 25mm spacers are perfect for the back. I got mine off either Amazon or eBay, check my build thread for the part number.

93celicaconv
05-15-2016, 07:02 PM
Update: The 225/50R16 tires were put on the 7th Gen GT-S 16"x6.5" wheels, and onto one of our ST185's. There was sufficient room at the closest potential for contact area (rears to struts) to not cause a problem. So no spacers are needed. Those tires do drive nicely on an ST85. Thanks for all the input.