Moparts

Tire and wheel size on '70 Newport?

Posted By: MrAngry

Tire and wheel size on '70 Newport? - 12/13/13 11:15 PM

Hey Guys -

I'm looking to upgrade the wheels on a 1970 Chrysler Newport to a set of 15-inch classic torque thrust D's with BFG TAs, however I'm not sure of the correct backspacing and or how wide I can go on both the front and rear. I'm thinking maybe a 235 or 255 front on a 7-inch rim and then perhaps a 255-285 on a 8.5" or 10" rear.

Anyone have experience with these land yachts?

Thanks - Mike
Posted By: MowP4rsn

Re: Tire and wheel size on '70 Newport? - 12/14/13 04:33 AM

I run 235/75-15 on all corners, I think I have 8" width wheels with zero offset spacing on repop Vector SEs
Posted By: Commando1

Re: Tire and wheel size on '70 Newport? - 12/14/13 01:30 PM

Quote:

Hey Guys -


Anyone have experience with these land yachts?

Thanks - Mike


6-1/2" to 7" width with standard offset is more than adequate for P235/75's on all four corners.
They fit the wheel well nicely and are nice proportion.
Your 8+" wheels are too wide.
You'll get a dozen guys telling you how big they've gone but it's for bragging rights only.
Posted By: SattyNoCar

Re: Tire and wheel size on '70 Newport? - 12/15/13 07:48 AM


I don't know what the back spacing is on a stock cop car rim but I ran those rims on a '71 Newport (4dr) I used to have and ran 255/70/15 on the back with 235/75/15 on the front.

Back tires didn't rub anywhere, BUT, axle had to be at full droop to get the wheel on and off.

(As an aside, my car didn't have fender skirts).

I loved how the car looked with those tires on the back. Filled things up nicely without going overboard.

Posted By: hp383

Re: Tire and wheel size on '70 Newport? - 12/15/13 08:52 PM

On my 71 Newport 2 Door I used to run a 225/75/15 in the front, and 265/70/15 in the rear.

Posted By: MrAngry

Re: Tire and wheel size on '70 Newport? - 12/15/13 09:18 PM

This is great info gentlemen, thank you. I'm think perhaps a 235/60/15 on the front and a 255/60/15 on the rear on 7-inch wheels. Need to measure for the offset though...
Posted By: autoxcuda

Re: Tire and wheel size on '70 Newport? - 12/15/13 09:56 PM

Quote:

Quote:

Hey Guys -


Anyone have experience with these land yachts?

Thanks - Mike


6-1/2" to 7" width with standard offset is more than adequate for P235/75's on all four corners.
They fit the wheel well nicely and are nice proportion.
Your 8+" wheels are too wide.
You'll get a dozen guys telling you how big they've gone but it's for bragging rights only.



8+" is too wide for what? Do they rub or hit something? Or you just don't like they way they look?
Posted By: autoxcuda

Re: Tire and wheel size on '70 Newport? - 12/15/13 10:04 PM

Quote:

Hey Guys -

I'm looking to upgrade the wheels on a 1970 Chrysler Newport to a set of 15-inch classic torque thrust D's with BFG TAs, however I'm not sure of the correct backspacing and or how wide I can go on both the front and rear. I'm thinking maybe a 235 or 255 front on a 7-inch rim and then perhaps a 255-285 on a 8.5" or 10" rear.

Anyone have experience with these land yachts?

Thanks - Mike



http://www.purevisiondesign.com/rides/galleries/big.html
Posted By: autoxcuda

Re: Tire and wheel size on '70 Newport? - 12/15/13 10:06 PM

Quote:


I don't know what the back spacing is on a stock cop car rim but I ran those rims on a '71 Newport (4dr) I used to have and ran 255/70/15 on the back with 235/75/15 on the front.

Back tires didn't rub anywhere, BUT, axle had to be at full droop to get the wheel on and off.

(As an aside, my car didn't have fender skirts).

I loved how the car looked with those tires on the back. Filled things up nicely without going overboard.





Cop Car 15x7 rims are 4.25" backspacing.
Posted By: MrAngry

Re: Tire and wheel size on '70 Newport? - 12/16/13 02:07 AM

Quote:

8+" is too wide for what? Do they rub or hit something? Or you just don't like they way they look?

- So... anyone know if an 8" with a 255 will rub back there?
Posted By: Furyman

Re: Tire and wheel size on '70 Newport? - 12/16/13 02:29 AM

I've got 275 60's on 15x8"'s on the rear and 245x 60's on 15x 7's on the frt of my 70 3 Hun.Lots of room in a C Body wheel tub.

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Posted By: mopargem

Re: Tire and wheel size on '70 Newport? - 12/16/13 02:51 AM

My 70 Newport has 15x7 245 60's up front and 15x8 275 60's pulling up the rear with no rubbing problems. Not sure on backspacing
I will add that in order to change a rear wheel and get past the skirt, you have to raise by the frame and let the suspension hang.

Attached picture 7960218-newportside(Small).jpg
Posted By: MrAngry

Re: Tire and wheel size on '70 Newport? - 12/16/13 04:28 AM

Wow... I'm in now in love with both your cars! If you guys wouldn't mind, I'd love to see more pics of those cars - mind posting a few more up?
Posted By: mopargem

Re: Tire and wheel size on '70 Newport? - 12/16/13 05:15 AM

Thx we love the port too!

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Posted By: mopargem

Re: Tire and wheel size on '70 Newport? - 12/16/13 05:17 AM

We take it out alot

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Posted By: Furyman

Re: Tire and wheel size on '70 Newport? - 12/16/13 04:21 PM

I put 10,000 miles on my 70 this year...just about ready to roll over for the first time.It's an original paint U code 440/375 and was one owner (deceased) until I purchased it this May.Had to do the usual...brakes,complete front end and put a TTI sytem on it.Going to clean it up under the hood this winter;might even put in a mild 500 stroker motor thats been sitting around the shop and save the #'s engine cause I tend to drive it hard sometimes.

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Posted By: gch

Re: Tire and wheel size on '70 Newport? - 12/22/13 03:59 AM

I have 15x8 on the rear of my 70 Polara and I run 275/60/15 and have run 255/70/15 as well.4.5 backspace works.It won't matter as much on a 7" rim.I would limit my sizing on a 7" rim to either 255/60 or 235/70 or 75 as far as big tires.
235/60/15 is awful short on a c body that is nose heavy.I would consider a taller tire.
Posted By: moparhinck

Re: Tire and wheel size on '70 Newport? - 12/22/13 05:43 AM

I first ran 255/60r15's on 15x7, and 275/60r15's on 15x8's on my '69 Polara

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Posted By: moparhinck

Re: Tire and wheel size on '70 Newport? - 12/22/13 05:46 AM

then I switched to 235/70r15 on 15x7's, and 255/70r15 on 15x8.5's. I like the highth better, and no rubbing either way

Attached picture 7966909-polara331s.JPG
Posted By: mkdart

Re: Tire and wheel size on '70 Newport? - 12/22/13 06:59 PM

I dig that big gray boat!!! Mike
Posted By: 6PKRTSE

Re: Tire and wheel size on '70 Newport? - 12/23/13 05:59 PM

235/70r15 on 15x7's on my New Yorker. Sorry, not the best picture.

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Posted By: cjbill

Re: Tire and wheel size on '70 Newport? - 12/26/13 09:08 PM

I had 15x8 on my 300, and they just didn't do it for me. Went back to the 15x7 chrome road wheels, with 235/75/15 RWL and it just looks "right" to me. There is ACRES of room on the back of a c-body.

Thanks for posting, though, good to have an idea of what others are running on their C-bodies!
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