17 inch tires?

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17 inch tires?

Post by NOMOREWORK on Sat Jun 16, 2018 10:27 am

First question from new member. Looking for recommendations for tire sizes to mount on 17x8 and 17x9.5 wheels. Will be putting these on 77 Buick Regal which has been lowered 1 inch.

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Re: 17 inch tires?

Post by REVINKEVIN on Mon Jul 02, 2018 8:32 pm

Hey. First off, welcome. I am doing the same search right now and I will share what I have learned. I am looking at using 17x9.5 fronts and 17x11 rears with 275/40/17 fronts (25.55" tall) and 315/35/17 rear (25.55" tall). I would like the tire to be a little taller so I am still searching. If you use the 275/40/17 on the rear and a 255/40/17 front (25.08" tall) you would have no problem. They would just be short tires that might show to much fender gap. Do you have a pic of how your car sits now? I have been searching 18" rim combo's but I can't find the width to height ratio that I am looking for. Look at this link. They have a 245/45/17 and a 275/40/17 that might be perfect. These tires have good reviews from what I have found and they are priced right. Hope this helps.

http://www.mickeythompsontires.com/street-tires/street-comp
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Re: 17 inch tires?

Post by alowerlevel on Mon Jul 02, 2018 9:53 pm

I know it's not a g3, but here's some 225/50 & 275/50s on my 67.  The fronts are 25.8" and the rears are 28".

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Re: 17 inch tires?

Post by REVINKEVIN on Mon Jul 02, 2018 10:03 pm

Looks great. The 28" tire in the rear really fills up the wheel well. I am looking at the 315/35/20 tires and they are 28.62". I have these on my 86 C10. Since this size is used on BMW and Porcshe suv's there are many brands out there.
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Re: 17 inch tires?

Post by NOMOREWORK on Fri Jul 06, 2018 7:21 pm

Thanks RevinKevin  your suggestion was exactly what the guy at the tire shop suggested as well. Will try to post new picture to show stance after lowering. Also considered 285-40-17 but selection from brands he carries wasn't that great.

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Re: 17 inch tires?

Post by NOMOREWORK on Mon Jul 09, 2018 3:45 pm


Here it is with the 1 inch lowering springs installed.

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Re: 17 inch tires?

Post by REVINKEVIN on Mon Jul 09, 2018 7:24 pm

Nice car.
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Re: 17 inch tires?

Post by NOMOREWORK on Sun Jul 15, 2018 4:13 pm

Wheels and tires finally installed!

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Re: 17 inch tires?

Post by Zaptiah on Mon Jul 16, 2018 12:28 pm

Those look super sharp, well done. Can you share the specs on the wheels? I am looking for that same 17x8 front amd 17x9.5 rear and find info on the correct backspacing and offset for our cars is rather difficult. Thanks - ron

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Re: 17 inch tires?

Post by NOMOREWORK on Mon Jul 16, 2018 5:46 pm

Ron my original plan had been 17x8 and 17x9.5 but due to some confusion between myself and the shop I ordered them from, I ended up with 17x8 4.5 inch back spacing for the front , and 17x9 5 inch back spacing for the rears. American Racing makes 2 versions of the Magnum Wheel which I bought, one version was 17x9 and the other was 17x9.5 the shop ordered the wrong version but by the time I finally got them I wasn't going to argue over a half inch in wheel size, so I just had them put on with the new tires.
I thought American Racing had a pretty good selection and they were very helpful when I called them.

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Re: 17 inch tires?

Post by Zaptiah on Mon Jul 16, 2018 10:07 pm

Ahh i see. So with that 5 inch back space what offset did you end up with? How much room was in there? I am looking at ridlers 17x9.5 with 5 inch of back space tbay gives a -5mm offset for the rear.

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Re: 17 inch tires?

Post by NOMOREWORK on Tue Jul 17, 2018 4:40 am

Not sure on the offset but I have more then enough room for my set up.

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Re: 17 inch tires?

Post by Zaptiah on Tue Jul 17, 2018 7:42 am

Thanks for the info and help. Your car looks brilliant. I am starting on mine this week so every little bit of info helps 👍

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Re: 17 inch tires?

Post by bigredlaguna on Tue Jul 17, 2018 8:43 am

Offset and backspacing are just different ways of describing the same thing.
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Re: 17 inch tires?

Post by impalamonte on Tue Jul 17, 2018 12:30 pm

I have 18" rims.
Rear : 295/ 45 's on the rear. Rear spring compressed , I have 3/8" clearance between the sidewall and fender lip. 5.25" backspacing
Front : 255 / 50 / 18 . 5.25 " backspacing.
I also have the B-body spindle upgrade which brings the two front tires inboard approx. 1/4".
But , I do still have 3/8" to 1/2" frame clearance lock to lock.
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Re: 17 inch tires?

Post by Zaptiah on Tue Jul 17, 2018 10:30 pm

Impalamonte thanks for those measurements. It sounds like 17x9.5 and 5 inch back space should work just fine.

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Re: 17 inch tires?

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