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Largest 15" Tire Size

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  • #16
    after reading all the post I have an old slot rim 15x8 with a 255/60 mounted on it a stuck it on my 79 Cutlass, there is still a lot of room in the wheel well. Everyday driving will be ok. And from the pic from the beginning of this post that combo really is cool...:icon14:

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    • #17
      I have gone back and forth on this for years on my 88 Cutlass. The tires just do not fill the wheel wells. Currently I am running 215 60 14s all the way around. Still not tall enough. I would like to have 15 inch wheels and have found some for about $130.00 new, but I just dont want to go too big. The problem is at least for me is that the tires are not tall enough. Next time I will go with 215 70 14s.

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      • #18
        Just my luck!!!

        Got my 15" chrome rally wheels today from specialty wheel and have been searching for Goodrich 235/60/15 tires only to find out they have been discontinued. I liked the way they look on your car 88. So now I have to find another tire with raised white lettering. I found Goodyear Eagle GT II but there $40.00 more per tire.

        I'm trying to go as wide as I can without any rub and figure the 235 was a safe bet. Is it possible to go wider on an 87 Salon?

        LJAM

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        • #19
          Im running 235 60 15 on the fronts and 255 60 15 on the backs on my 83 Hurst with no problems.
          My 87 442 has 255 50 15s all around with no issues as well.
          It sucks that they discontinued BFG 15s, im sure if enough people complain they'll reissue them...
          Lightning Rods repair service:CLICK HERE
          Seller Feedback:CLICK HERE
          1988 H/OCA Advisor
          88 H/O #1 of 4
          88 CSC White/Claret - T-tops
          88 H/O Triple Black
          87 442 Black/Gray - T-tops
          85 442 White/Blue - T-tops
          85 442 White/Blue - T-tops
          85 442 White/Claret - T-tops
          85 442 White/Sage
          84 H/O Aero Commemorative #2199 - Sunroof
          83 H/O #2400 Sand Gray - Sunroof
          83 H/O #1607 Sand Gray - T-tops
          83 H/O #727 Maple
          "Keep them Rockets lit!"

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          • #20
            Well I found out the BFG's arn't discontinued but are just on a long backorder. I spoke to a person at Tire Rack and they are getting a shipment in next week that was on a 6 month backorder. It sucks having to pay the extra shipping but this looks like the only way to get them. I also found out that the Firestone FireHawk Indy 500's are on back order and the dealers can't say when they'll be getting them in from Mexico.

            Personally I like the looks of the Goodrich tire, and on a new set of SSIII's they should look really nice!!!!!

            LJAM

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            • #21
              The saga continues!!!!!

              Well I received the BFG's yesterday from Tire Rack and took the rims to NTB to have them installed. The guys at NTB were questioning the valve stems so I called Specialty Wheels and found out theres an extra rubber piece they use just for shipping purposes. They mentioned to me to make sure the installer balanced the wheels using the lugs and not the center hub. Well everyone at NTB never heard of such a thing so I called my mechanic and he looked it up and found out that Specialty Wheels was correct. So now I had to find a place that was able to balance them and after 10 calls I found the Just Tires location by me was able to do it. I took everything over to Just Tires and the owner said he wouldn't be able to get to them until tomorrow, so we unloaded them and went in his office to fill out the paperwork and while we were starting that he decided he could do them at that time. So they put them on, balanced them, and even cleaned the blue off of the white lettering. At the end he asked how I was going to pay and I said my debit card. He asked if I had any cash on me instead and I showed him I had $41.00 and that was all. So he said that would do and that now he wouldn't have to stop and get cash on the way home.
              So I guess after all the running around and bull$&!$ paying $41.00 to have 4 tires mounted and balanced worked out in the end.

              I guess it was my day after all...

              LJAM

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              • #22
                Going to buy tires for the 87 soon, and I may not be able to get the 215 65R 15 tires (have a shop near here that sells good used tires, and may have to go with a different size...have to watch the budget). How much would the speedometer be off if I went with, say, a 225 or 235 60R 15 on the 15X7 rims? Don't want any rubbing, and I don't want to be running 65 when I think I'm running 55.
                '76 Cutlass S 350 (1981-83)
                '79 Cutlass Supreme 260 (1983-85)
                '79 Cutlass Supreme 350 Chevy (1989-1993)
                '77 Cutlass Salon 350 (1996-present)
                '98 Bravada - green - (2005) RIP
                '98 Bravada - black - (2005-2011) sold
                '87 442 (May 2010) undergoing restoration

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                • #23
                  cooper cobra

                  Originally posted by LJAM View Post
                  Well I found out the BFG's arn't discontinued but are just on a long backorder. I spoke to a person at Tire Rack and they are getting a shipment in next week that was on a 6 month backorder. It sucks having to pay the extra shipping but this looks like the only way to get them. I also found out that the Firestone FireHawk Indy 500's are on back order and the dealers can't say when they'll be getting them in from Mexico.

                  Personally I like the looks of the Goodrich tire, and on a new set of SSIII's they should look really nice!!!!!

                  LJAM
                  I run cooper cobras on my 86, 235 60 14s and 295 50 15s out back... raised white letter and good price!

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                  • #24
                    Tire size Questions

                    I was hoping for a simple solution to tire size, oh well. I have an 87 Cutlass Supreme that I'm turning into somewhat of a street rod. I have Weld front 15x5 and 15x8 for rear. Just by surfing the net looking at different mods that have been made, I have found the look that I desire but do not know the actual sizes. The stance of g bodies with 5's and 8's that I like have very large rear hides. I do not know if mods have been made to suspensions to accommodate. I noticed multiple sizes in the post and still cant decide. Any feedback would be appreciated, thanks.


                    PS, I have a pic of car with desired look but haven't figured out how to post. This is my first post.

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                    • #25
                      All depends on your back spacing.
                      I am running 275's with a factory 15x7 4" BS SSIII and they only rub if I take a corner hard.
                      Lightning Rods repair service:CLICK HERE
                      Seller Feedback:CLICK HERE
                      1988 H/OCA Advisor
                      88 H/O #1 of 4
                      88 CSC White/Claret - T-tops
                      88 H/O Triple Black
                      87 442 Black/Gray - T-tops
                      85 442 White/Blue - T-tops
                      85 442 White/Blue - T-tops
                      85 442 White/Claret - T-tops
                      85 442 White/Sage
                      84 H/O Aero Commemorative #2199 - Sunroof
                      83 H/O #2400 Sand Gray - Sunroof
                      83 H/O #1607 Sand Gray - T-tops
                      83 H/O #727 Maple
                      "Keep them Rockets lit!"

                      Comment


                      • #26
                        I run 215 70 15 up front and 255 60 15 MT drag radials on the rear. Mounted on the original 15 x 7 rims. My car puts over 500 hp to the ground on the chassis dyno. My best 60' time on the foot brake is 1.52 and 1.58-1.60 is typical. A 255 60 15 is the perfect compromise tire on a G body. This is with the long standing 255 60 15 drag radial. Recently Mickey Thompson released the new ET-R line and their 255 60 15 replacement is now 27.5" tall instead of 27.1" tall. That will be even better for us G body guys.

                        http://www.mickeythompsontires.com/s...item=ETStreetR
                        Last edited by oldsmobiledave; 06-12-2015, 11:05 AM.
                        1965 442 White on blue 455 / Richmond 5 speed
                        1969 442 Gold / Gold 400 Auto (GM Executive car)
                        1970 Cutlass W-31 Green Auto 14.47 @ 99.7mph
                        1972 442 524cid BBO 10.89 @ 122.5mph @ 3950'
                        1972 442 W-30 Radiant Green 4 speed 3.73s
                        1987 442 470cid SBO 11.37 @ 119.4mph @ 3800'
                        1980 GMC 468 BBO 14.73 @ 93.1 mph @ 6000'
                        Seventy-nine Oldsmobiles owned since 1989.

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