February 19, 2019, 08:40:45 PM

Author Topic: 17" wheel/tire specs  (Read 1056 times)

Offline XcreatonX

17" wheel/tire specs
« on: July 03, 2018, 12:22:11 AM »
I currently have a set of 18x9.5+35 with 275/35 on my FD from my previous car, and am looking to go with a 17.  All my previous cars have been AWD so I have always had to run a square setup.  My question is that since I am setting this up for tracking, and light street driving, would a square setup still be desirable? Currently the car has rolled and pulled rears, and stock fronts. Here are the specs I was looking at running.

staggered
17x9.0 +35 front with a 255/40 NT01
17x9.5 +32 rear with a 275/40 NT01

Square
17x9.5 +45 front 275/40 NT01
17x9.5 +32 rear 275/40 NT01

I determined the square fitment based off my current setup.  The rears have a 5mm spacer, and are pretty flush, while the fronts have a small amount of poke. 


Any info on personal experience would be appreciated. 

Offline ZDan

Re: 17" wheel/tire specs
« Reply #1 on: July 03, 2018, 09:06:06 AM »
275/40-17 is IMO a bit tall to fit up front.  I  run 255/275 NT01s.  I've also run 235/275, but went back to 255 fronts.
My ideal track tire setup for my car would be 275/35-17 and 295/35-17 Hoosiers, but that wouldn't allow driving long distances to/from the track and I'd have to invest in wider wheels...

No reason to run staggered offsets if you do decide to run a square setup, just go +45 all around.  When I got my PF01s, I went 17x8.5 +40 front and 18x9.5 +45 rear to keep the front/rear poke more balanced.
'94 RX-7 / 6.8 LS3 / T56 Magnum
0-184.8 in 5280'  :)  (with the old 6.0...)

Offline 346fc3s

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Re: 17" wheel/tire specs
« Reply #2 on: August 25, 2018, 07:12:31 PM »
I agree, the 275/40 is tall for the front, you can do it but it rubs a little due to height, not width.  I settled on a 255/40 front 275/40 rear 17x9 +45 all around.  The rears were too wide for the wheels but helped straight line grip and gave a comfy ride.  :) 
'87 Turbo II 5.3/T56
'03 Ram 3500 diesel, tow rig
'04 RX8 track toy
'05 IS300 wagon- waiting for a v8

Offline MPbdy

Re: 17" wheel/tire specs
« Reply #3 on: August 25, 2018, 08:04:05 PM »
I run 255/40/17 +45 with a 12mm spacer our back. With a pull you’ll want more Width out back.

9.5+45 square with a spacer in the rear would probably work great.

Offline Gunnytron

Re: 17" wheel/tire specs
« Reply #4 on: August 26, 2018, 02:48:18 AM »
I agree, the 275/40 is tall for the front, you can do it but it rubs a little due to height, not width.  I settled on a 255/40 front 275/40 rear 17x9 +45 all around.  The rears were too wide for the wheels but helped straight line grip and gave a comfy ride.  :)

If the 275 rubs due to height then does it not fitting depend on how high you have your suspension?

I was thinking if getting bigger tyres to fill the wheel arch gap so it still looks good without having to be too low for the street.
http://www.norotors.com/index.php?topic=12880.0
FD, LS1 running 220 3.90 Trickflow heads, Comp Ultra-gold Arc 1.72 Rockers, 7.550 BTR Pushrods, BTR Stage II NA Cam 227/234 .614"/.576" 113+2, ARP Head Bolts, BTR Platinum Springs, Ported FAST 90, NW 90mm TB, FAST 60lb Injectors, Textralia Clutch/Flywheel, T56, Cobra 3.55 Diff, Holley HP EFI, Racelogic TC.

Offline 346fc3s

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Re: 17" wheel/tire specs
« Reply #5 on: August 26, 2018, 02:30:16 PM »
The tire rubs the front of the wheel well when turning.  You can run a very nice even tire gap with a 255/40 and still be able to clear all normal street obstacles. 
'87 Turbo II 5.3/T56
'03 Ram 3500 diesel, tow rig
'04 RX8 track toy
'05 IS300 wagon- waiting for a v8

Offline XcreatonX

Re: 17" wheel/tire specs
« Reply #6 on: August 28, 2018, 11:46:32 PM »
Please don't roast me to bad, as I have not had the chance to drive an FD.  Just kind of jumped head first into this project, and hope the outcome is worth it.

Is there any understeer issue with a smaller 255 in the front? If there is no ill effects, I think I would be fine with a 255.

I ended up ordering 17x9.5+45 for all four, and will run a spacer in the rear most likely.  I will have to confirm fitment once the wheels are stateside.

Offline ZDan

Re: 17" wheel/tire specs
« Reply #7 on: August 30, 2018, 08:57:15 AM »
Is there any understeer issue with a smaller 255 in the front? If there is no ill effects, I think I would be fine with a 255.

I ended up ordering 17x9.5+45 for all four, and will run a spacer in the rear most likely.  I will have to confirm fitment once the wheels are stateside.

The under/oversteer effects of tire stagger are almost always overstated by most people on most interwebz car forums...  Particularly on the street, but also at the track, 255/275 stagger is not going to give you understeer given a halfway decent suspension setup and alignment settings.
'94 RX-7 / 6.8 LS3 / T56 Magnum
0-184.8 in 5280'  :)  (with the old 6.0...)

Offline T34418L31

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Re: 17" wheel/tire specs
« Reply #8 on: September 21, 2018, 10:58:10 AM »
I run 255/40/17 +45 with a 12mm spacer our back. With a pull you’ll want more Width out back.

9.5+45 square with a spacer in the rear would probably work great.

Are you running that spacer on stock studs?

I recently moved from 255/40 275/40, +43 9" wheels, to 255 square on the same wheels, and I'd like to push the rear out a bit. I feel like longer studs are needed for spacers that big, but I've never ran spacers and haven't measured the stock studs, either.

Offline MPbdy

Re: 17" wheel/tire specs
« Reply #9 on: September 21, 2018, 06:45:41 PM »
I have ARP studs on mine...very long. 

Offline freeskier7791

Re: 17" wheel/tire specs
« Reply #10 on: September 21, 2018, 07:59:52 PM »
I run 255/40/17 +45 with a 12mm spacer our back. With a pull you’ll want more Width out back.

9.5+45 square with a spacer in the rear would probably work great.

Are you running that spacer on stock studs?

I recently moved from 255/40 275/40, +43 9" wheels, to 255 square on the same wheels, and I'd like to push the rear out a bit. I feel like longer studs are needed for spacers that big, but I've never ran spacers and haven't measured the stock studs, either.
Theres no way you will be able to run a 12mm spacer safely on stock studs.  Maybe a 5mm but thats pushing it.  Jegs has a nice house brand stud thats like the ARP for cheap

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Offline T34418L31

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Re: 17" wheel/tire specs
« Reply #11 on: September 22, 2018, 09:22:20 AM »
Theres no way you will be able to run a 12mm spacer safely on stock studs.  Maybe a 5mm but thats pushing it.  Jegs has a nice house brand stud thats like the ARP for cheap

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I have ARP studs on mine...very long. 

Thanks. Yea, I'll have to take a look at those at some point.

Offline MPbdy

Re: 17" wheel/tire specs
« Reply #12 on: September 22, 2018, 01:43:15 PM »
You do need to remove the hub from the spindle to replace the rear studs. Kind of a pain for what is usually a small job.

Offline Gunnytron

Re: 17" wheel/tire specs
« Reply #13 on: September 22, 2018, 01:53:06 PM »
You do need to remove the hub from the spindle to replace the rear studs. Kind of a pain for what is usually a small job.

FYI this destroys the wheel bearing.
http://www.norotors.com/index.php?topic=12880.0
FD, LS1 running 220 3.90 Trickflow heads, Comp Ultra-gold Arc 1.72 Rockers, 7.550 BTR Pushrods, BTR Stage II NA Cam 227/234 .614"/.576" 113+2, ARP Head Bolts, BTR Platinum Springs, Ported FAST 90, NW 90mm TB, FAST 60lb Injectors, Textralia Clutch/Flywheel, T56, Cobra 3.55 Diff, Holley HP EFI, Racelogic TC.

Offline XcreatonX

Re: 17" wheel/tire specs
« Reply #14 on: October 16, 2018, 10:04:09 PM »
Finally received the my new wheels.  They are Weds TC105X 17x9.5+45, and weigh in at 16.4 lbs.  I am planning on running 275 in the rears, and if I can fit them, 275 in the fronts as well. If they do not fit, then I will go down to a 255.

I think they look pretty good, and look forward to getting the car back on the ground, and the motor in.