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massrog
Joined: 02 Jul 2021
Posts: 17
Location: Mass
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 Posted: Fri Jul 09, 2021 1:55 am Post subject: tire sizes for stock wheels |
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I was looking around for tires for the factory white wheels for my newly (almost) purchased '85. I know the originals were staggered with higher wider rears. What is "modern" conventional wisdom on replacements?
Thanks in advance!
RogerG |
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plumkrazy
Joined: 27 Jul 2005
Posts: 1126
Location: Ann Arbor Michigan
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| Posted: Fri Jul 09, 2021 9:45 am Post subject: |
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| guessing you said white wheels you have a convertible. the tire size should be 225-60-15 front and rear, but if it was a Coupe it would be 225-50-15 which are harder to find. Ford but a sticker on the passenger door jamb with the size and pressures but ASC or time it may be gone |
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massrog
Joined: 02 Jul 2021
Posts: 17
Location: Mass
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| Posted: Fri Jul 09, 2021 2:00 pm Post subject: |
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| plumkrazy wrote: | | guessing you said white wheels you have a convertible. the tire size should be 225-60-15 front and rear, but if it was a Coupe it would be 225-50-15 which are harder to find. Ford but a sticker on the passenger door jamb with the size and pressures but ASC or time it may be gone |
Thank you very much! The car has flat spotted tires on aftermarket cobra style 16's on it now. Has anyone done 16's on their convertible and if so sizes?
On the convertible is there a disadvantage to higher/wider in the rear handling- wise? |
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ChuckG
Joined: 07 Apr 2009
Posts: 508
Location: Ann Arbor,MI
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| Posted: Sat Jul 10, 2021 6:25 am Post subject: |
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Yup, PlumKrazy is correct. New vert decals are available from Hank at www.ascmclaren.com
Coupes ran with the standard Capri sticker, despite the tire swap. |
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negusm
Site Admin
Joined: 25 Aug 2004
Posts: 5183
Location: Charlotte, NC
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| Posted: Tue Jul 13, 2021 5:54 pm Post subject: Re: tire sizes for stock wheels |
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| massrog wrote: | | I know the originals were staggered with higher wider rears. |
Where did you hear this?
-Mike
_________________
1985 ascMcLaren Coupe - Midnight Blue
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ChuckG
Joined: 07 Apr 2009
Posts: 508
Location: Ann Arbor,MI
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| Posted: Wed Jul 14, 2021 2:30 am Post subject: Re: tire sizes for stock wheels |
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| massrog wrote: | I was looking around for tires for the factory white wheels for my newly (almost) purchased '85. I know the originals were staggered with higher wider rears. What is "modern" conventional wisdom on replacements?
Thanks in advance!
RogerG |
No, they were not staggered. |
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massrog
Joined: 02 Jul 2021
Posts: 17
Location: Mass
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| Posted: Wed Jul 14, 2021 3:21 am Post subject: |
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| When I say staggered I meant 50's on rear and 60's front. I since realized that was the coupe only (per Motorweek video on 86's). That said other than "originality" (which on this car has been lost with the ground effects) is there any performance reason not to do this on the vert? |
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ChuckG
Joined: 07 Apr 2009
Posts: 508
Location: Ann Arbor,MI
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| Posted: Wed Jul 14, 2021 9:43 am Post subject: |
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| massrog wrote: | | When I say staggered I meant 50's on rear and 60's front. I since realized that was the coupe only (per Motorweek video on 86's). That said other than "originality" (which on this car has been lost with the ground effects) is there any performance reason not to do this on the vert? |
That was not a production car. Tires were all the same size--225/50/15s on Coupes, 225/60/15s on Verts
I bought two Coupes new--an '85 and an '86. I can assure you Full Coupes as 50s all the way around. |
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plumkrazy
Joined: 27 Jul 2005
Posts: 1126
Location: Ann Arbor Michigan
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| Posted: Wed Jul 14, 2021 9:51 am Post subject: |
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| massrog wrote: | | When I say staggered I meant 50's on rear and 60's front. I since realized that was the coupe only (per Motorweek video on 86's). That said other than "originality" (which on this car has been lost with the ground effects) is there any performance reason not to do this on the vert? |
I would think you would put 60's on the rear and 50's on front to get the bigger wider tire for rear traction and the lowered front. To get the lowered front to rear rack. 235 60 15 was a popular size over the stock 225 60 15 |
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massrog
Joined: 02 Jul 2021
Posts: 17
Location: Mass
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| Posted: Wed Jul 14, 2021 11:07 am Post subject: |
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| plumkrazy wrote: | | massrog wrote: | | When I say staggered I meant 50's on rear and 60's front. I since realized that was the coupe only (per Motorweek video on 86's). That said other than "originality" (which on this car has been lost with the ground effects) is there any performance reason not to do this on the vert? |
I would think you would put 60's on the rear and 50's on front to get the bigger wider tire for rear traction and the lowered front. To get the lowered front to rear rack. 235 60 15 was a popular size over the stock 225 60 15 |
Ahh, yet another failure of the brain cells! I would have sworn my old '68 RS Camaro had 50's rear 70's front but that was 45 years ago! LOL Thanks for catching that for me! I was shopping based on that faulty memory rather than checking specs! |
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plumkrazy
Joined: 27 Jul 2005
Posts: 1126
Location: Ann Arbor Michigan
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| Posted: Wed Jul 14, 2021 1:46 pm Post subject: |
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| maybe thinking J78 15 and F78 15 sorry just had this talk at work |
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