Looking for help picking tire sizes.

Discussion in 'Wheels & Tires' started by AZ_whippleS550, Mar 17, 2020.

  1. AZ_whippleS550

    AZ_whippleS550 Well-Known Member

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    So I’m going to be buying 20in wheels soon 20x10 +35 fronts 20x11 +50 rears wondering what tire sizes to get. Looking at 285 front 305 or 315 rear but not sure on aspect ratio of 30 or 35. Looking if people have pictures of their wheels and tires and what size they chose. Lowered or stock ride height appreciated bonus if you have p51 wheels since that is what I am getting.
     
  2. BmacIL

    BmacIL Enginerd

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    I'd strongly recommend 275/35 or 285/35 fronts and 305/30 rears.
     
  3. m3incorp

    m3incorp Well-Known Member

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    Either the 275/35 or 285/35 upfront. A 305/35 also fits in the rear. A 315/35 or 315/30 in the rear will mainly depend on how low you are lowered. I have 305/35R20 in the rear and I am pretty low, to the point I don't think I could have fit a 315 on the rear.

    275/35R20 tire is 27.6" diameter

    285/35R20 tire is 27.9" diameter

    305/35R20 tire is 28.4 diameter

    305/30R20 tire is 27.2" diameter

    315/35R20 tire is 28.7 diameter

    315/30R20 tire is 27.4 diameter

    If you want to keep the diameters in height close between fronts and rears. 275/35R20 Fronts and 315/30R20 Rears or 285/35R20 Fronts and 315/30R20 Rears. Some like me don't mind a slightly taller tire in the rear.

    The 315mmm tire might be a little more expensive and harder to find from different manufacturers.

    Which wheels are you planning to buy? Are you lowered or how much do you plan to lower?
     
  4. Little Guy

    Little Guy Well-Known Member

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    Check out this video from CJ Pony Parts. On the last car showed, it has 11 width on the back and he went with 295/35/20. I think it looks good but everyone has their own opinion. The OP has whipple in his name so you may want to go with the 305 for a little more traction.

     
  5. m3incorp

    m3incorp Well-Known Member

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    I couldn't find that article. Just wanted to take a look at the different setups.
     
  6. OP
    OP
    AZ_whippleS550

    AZ_whippleS550 Well-Known Member

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    A
    That video was pretty helpful. I'm thinking the 35 is looking like the best option. I don't plan on going super low just like the standard 1in drop. I need to do a little research on what spring would be good for my car since it has more weight on the front end because of the whipple.
     
  7. m3incorp

    m3incorp Well-Known Member

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    I have a supercharger also and the Steeda Sport Progressive worked well for me. It advertises a 1.25 drop on front and 1.00 on the rear. I do think mine dropped a slight amount more than what is advertised. The ride is still not bad, even with the 20" wheels but it is firmer.

     
  8. Little Guy

    Little Guy Well-Known Member

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  9. OP
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    AZ_whippleS550

    AZ_whippleS550 Well-Known Member

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    Good to know. I was actually looking at the steeda springs.
     
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  10. m3incorp

    m3incorp Well-Known Member

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    Did you decide which wheel manufacturer you are going with?

     
  11. OP
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    AZ_whippleS550

    AZ_whippleS550 Well-Known Member

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    Yeah I have I’m getting the p51 wheels 101RF
     
  12. m3incorp

    m3incorp Well-Known Member

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    Those are really nice wheels. There are some dealers that give forum discounts on them.

     
  13. OP
    OP
    AZ_whippleS550

    AZ_whippleS550 Well-Known Member

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    Do you know what vendors?
     
  14. m3incorp

    m3incorp Well-Known Member

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    PK Auto Design
    Need For Speed Motorsports
    Vibe Motorsports
    Custom Wheels for Less (CW4L)

    Send them an email and let them know you are a forum member. I've used 2 of the 4 above and got forum discounts. All are very prominent on the Corvette forum but offer wheels for different car makes.

     
  15. OP
    OP
    AZ_whippleS550

    AZ_whippleS550 Well-Known Member

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    Awesome thanks so much for the help.
     
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