Hoosier A7 vs BFG R1S in 315 width

Discussion in 'Brakes, Wheels and Tires' started by docs302, Sep 3, 2018.

  1. docs302

    docs302 TMO Race

    Messages:
    332
    Likes Received:
    150
    Joined:
    Dec 31, 2014
    Location:
    Philly
    Anyone with experience running both these tires? I'm concerned with running the 315 BFG which has a width of 12.1" vs. the A7's 11.8". I know others have run the Hoosier in 315 square but will that extra width mean trouble up front? I have 3mm, 10mm and 15mm spacers but I don't want to get the tires delivered only to find I can't fit them. Do I need more than 15mm? I do have the ARP studs.
     
  2. Mad Hatter

    Mad Hatter Gotta go Faster

    Messages:
    2,318
    Likes Received:
    882
    Joined:
    May 6, 2013
    Location:
    Santiago, Chile
    Do you have offset struts like the Cortex setup?? I run 320/650-18 Contis without rubbing using a 15mm spacer.... I think you need a 25mm spacer for a regular suspension.
     
    VoodooBoss and Grant 302 like this.
  3. docs302

    docs302 TMO Race

    Messages:
    332
    Likes Received:
    150
    Joined:
    Dec 31, 2014
    Location:
    Philly
    Yes, I have the offset strut. With the 305 Pirelli and -3.5 camber I used a total of 13mm of spacer and seemed fine. But going from the 305 Pirelli (which is more like a 295) up to a 315 is a big jump.
     
  4. Mad Hatter

    Mad Hatter Gotta go Faster

    Messages:
    2,318
    Likes Received:
    882
    Joined:
    May 6, 2013
    Location:
    Santiago, Chile
    No worries, the Conti 320 has a section width of 12.75" So its a bit wider then the Hoosiers in 315 with a section wiidth of 12.5". Since the Contis fit with room to spare with a 15mm spacer, you should have no problems with the Hoosiers. Section width is more relevant then tread width in this case.

    its a nice jump!!! But watch out if you have a lot of squat. The added rear grip makes the car hunker down more then the 295s.... watch the rears dont rub! Ask me how I know......
     
    Grant 302 likes this.
  5. docs302

    docs302 TMO Race

    Messages:
    332
    Likes Received:
    150
    Joined:
    Dec 31, 2014
    Location:
    Philly
    Mad Hatter, I ended up buying a set of the new BFG R1S in 315/30. From the reviews they have gotten I think they will be ideal. Plus they were about $70 per tire less than the A7. Will let you know how they work out. Thanks for the help.
     
    Bill Pemberton and Mad Hatter like this.
  6. Mad Hatter

    Mad Hatter Gotta go Faster

    Messages:
    2,318
    Likes Received:
    882
    Joined:
    May 6, 2013
    Location:
    Santiago, Chile
    Just a quick note.... the Conti 320/650-18 tires are still for sale at Hoosier for $130 a tire...
     
    Grant 302 and VoodooBoss like this.
  7. Wingrider

    Wingrider '11 GT500, 99% Track Car. Lots of mods & I coach

    Messages:
    304
    Likes Received:
    85
    Joined:
    Aug 6, 2013
    Location:
    NorCal- Halfway between Laguna and Sonoma.
    As in they are going to stop making/selling them, or just a sale at the moment?
     

Share This Page