Tire Size question?

Discussion in 'Chevy Silverado Forum (GMC Sierra)' started by kingaudis4, Jun 3, 2011.

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  1. kingaudis4

    kingaudis4 New Member

    I was looking at putting some wider tires on my stock 08 silverado, it has 275/55/20 and i was wondering if 305/50/20 would fit? or if any one knows if they are to wide. thanks.
  2. 98Hotrod98

    98Hotrod98 New Member 100 Posts

  3. silveradotrailblazer

    silveradotrailblazer New Member 1000 Posts 100 Posts

    Welcome to the club.
  4. kingaudis4

    kingaudis4 New Member

    Do you know the backspacing on an 2008 silverado 1/2ton with factory 20inch 5 spoke wheels?
  5. 99'HEARTBEAT

    99'HEARTBEAT Moderator Staff Member Platinum Contributor 1000 Posts 100 Posts

    If the below Rim is the one you are asking about??....Factory Alloy 20in" Rims have a....Backspace of 6ins" and a Offset of...+31mm

    [​IMG]
    [​IMG]
    Wheel Size: 20 x 8.5
    Bolt Pattern: 6 x 5.5
    Finish: Machined Silver​
  6. GM Customer Service

    GM Customer Service Member 100 Posts

    Has this issue been resolved? I can also look into this for you. In order to do further research, I will need the VIN for the vehicle. Please feel free to contact me by private message as well. Thank you in advance.

    Tricia, GM Customer Service.
  7. JTx9

    JTx9 New Member

    I can fit 37's on a 2" body lift on my 1500 HD
    A Z71 with for keys can fit 35-12.50's with rubbing.
    But if you ain't rubbin you aint riddin!!!!
    But yes 305's will fit o stock rims. but when you start to get bigger rims and wider rims the rim itself begins to rub which in no bueno!

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