What tires should I run on a 15x8 rim?

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  • cwbaader
    Noobie
    • Oct 2005
    • 29

    #16
    Look closely at Alex's fenders...extreme hammer work!! That will be necessary with anything over a 225/50 on a 7" rim. That size, by the way, is the ideal race tire size (or a 225/45). Chuck

    Comment

    • alex
      R3VLimited
      • Oct 2003
      • 2024

      #17
      I had 245/45 16 on it with minimal fender work. What you see in the picture is fucked up work out of frustration.

      Comment

      • IS
        Grease Monkey
        • Jul 2005
        • 366

        #18
        Originally posted by alex
        Oh yeah? I wonder why you think so. Please let us know. Thanks.
        Autocross is an entirely different animal that aggressive street or DE driving. Would you run on the street with some of the low pressures you use in autox? Probably not. Running a tire that's under the maximum allowable will give better handling due to the geometry of the tire bead on the wheel, while possibly providing a small loss in ultimate grip throughout the pressure range.

        If you use the proper wheels, going larger is preferable, although the added rolling resistance and slower turn in doesn't make much sense on a purely street car.

        Don't take comments out of context. Thanks.
        87 325IS - Delphin Grey/Cardinal

        Comment

        • alex
          R3VLimited
          • Oct 2003
          • 2024

          #19
          Originally posted by IS
          Autocross is an entirely different animal that aggressive street or DE driving. Would you run on the street with some of the low pressures you use in autox? Probably not.
          Low pressures in auto-x? I disagree. I actually start out with lower pressures on the track accomodating larger increase in temps.

          Originally posted by IS
          Running a tire that's under the maximum allowable will give better handling due to the geometry of the tire bead on the wheel, while possibly providing a small loss in ultimate grip throughout the pressure range.
          Traction is all about contact patch. Tires are so stiff these days that it doesn't matter as much.

          Originally posted by IS
          If you use the proper wheels, going larger is preferable, although the added rolling resistance and slower turn in doesn't make much sense on a purely street car.

          Don't take comments out of context. Thanks.
          This is what the original question was:

          Originally posted by bimmer8604
          I'm looking at getting some 15x8s, and are going to use them for street/autox/light track use. Kyle

          Comment

          • Axxe
            No R3VLimiter
            • Aug 2004
            • 3355

            #20
            Any details on the 15x8 wheels you were looking at? I want to get into a set of R-comps for strict track use, and 205's on a 7" wheel are too girly.


            Keep it slideways!!

            Comment

            • SchnellerVert
              No R3VLimiter
              • Sep 2005
              • 3948

              #21
              I use a 205 at the moment and my times are competitive in my class. And I run with guys that use R's and I use crappy tires.

              Might want to get consistent first.

              Comment

              • Axxe
                No R3VLimiter
                • Aug 2004
                • 3355

                #22
                I need a set of wheels/tires for the track, so I figured that I will do it right the first time and buy wheels that will last and fit the type/size of tire I want to run.


                Keep it slideways!!

                Comment

                • Axxe
                  No R3VLimiter
                  • Aug 2004
                  • 3355

                  #23
                  Originally posted by Axxe
                  Any details on the 15x8 wheels you were looking at?


                  Keep it slideways!!

                  Comment

                  • JRKOUPE
                    No R3VLimiter
                    • Dec 2004
                    • 3159

                    #24
                    Originally posted by alex
                    I had 245/45 16 on it with minimal fender work. What you see in the picture is fucked up work out of frustration.


                    Alex,,,,,


                    what wheels are in your sig.......in the rain. Are those CCW?.....4 lug or 5?....16 x 8 or?....tia
                    I love sitting down and just driving!

                    Comment

                    • Brew
                      No R3VLimiter
                      • Oct 2003
                      • 3060

                      #25
                      I believe Alex is running 18x10s with 285/30s.
                      '91 318is
                      sigpic

                      Comment

                      • motorprestige
                        Mod Crazy
                        • Oct 2004
                        • 788

                        #26
                        Originally posted by Brew
                        I believe Alex is running 18x10s with 285/30s.
                        JEESUS! Overcompensation says that is overkill on a supra, let alone an e30. Waste of money IMO.

                        "Having won more road races than any other model in history, the E30 M3 is considered by many to be the world's most successful road race car." - Simply put, E30s kick ass.

                        Comment

                        • cheades
                          Mod Crazy
                          • Oct 2003
                          • 632

                          #27
                          Not overkill when you want to compete in Nationals for autox, he finished second in DSP this year.

                          Comment

                          • Tony
                            Member
                            • Nov 2003
                            • 92

                            #28
                            225/50/15 for the 15x8, plenty of choices there,

                            245/50 or 45/15 you have very limited choices< dunlop sp8000 has a 245/50/15, the only street tire I know of in that size.

                            Hosier has track only tires in 245/45 or 50/ 15, recommend a 15x8.5 rim for a 245 tire.

                            For most it seems the best compromise for a street tire and track tire is a 225/50/15 on a 15x7.5 or 8 inch rim.

                            My current set up is the Kosie 15x8 with the BFG KD 225/50/15,

                            I would love to see a tire maker make a 245/45/15, street tire, maybe they are listing

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