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73-87 Chevy _ GMC Trucks => Wheels & Tires => Topic started by: murraygmc on October 16, 2009, 11:47:57 am

Title: dumb questoin
Post by: murraygmc on October 16, 2009, 11:47:57 am
what is the patern on a 85 gmc 1/2 ton , im goina put a 4 " roughcountry lift on  and thay recomend 35/12/50 tiers so i need to figure what size rim to buy  , im wanting to go with a good combo look tire and rim .....can someone help thanks
Title: Re: dumb questoin
Post by: dv8customs on October 17, 2009, 11:19:28 pm
5x5
Title: Re: dumb questoin
Post by: Flamingbig10 on October 17, 2009, 11:49:02 pm
I assume its a 4x4 then it would have a 6x5 1/2 and I would go with a wheel that has a 3.75 bs or less
Title: Re: dumb questoin
Post by: malibu795 on October 18, 2009, 05:22:55 pm
Quote from: Flamingbig10 on October 17, 2009, 11:49:02 pm
I assume its a 4x4 then it would have a 6x5 1/2 and I would go with a wheel that has a 3.75 bs or less
man thats sticking out there... would be wise to get the steering box brace as well..

8-10" wide rims are recommend.. i have ran that tire on a 6.5" wide rim.. centers tend to wear faster...

i have had 16x6.5" with 5.125"BS rims on my truck no problem clearanceing the leave springs
and there is plenty of room ona  3/4 to run 15" rims
Title: Re: dumb questoin
Post by: murraygmc on October 19, 2009, 05:41:51 am
3.75 bs ? what dose that mean ?
Title: Re: dumb questoin
Post by: Flamingbig10 on October 19, 2009, 09:10:12 am
 it the distance from the inside lip of the wheel to the surface that bolts up to the axle
Title: Re: dumb questoin
Post by: malibu795 on October 19, 2009, 10:34:01 am
Quote from: Flamingbig10 on October 19, 2009, 09:10:12 am
it the distance from the inside lip of the wheel to the surface that bolts up to the axle

yep with nothing else changes  the differnce between a 4"bs and a 3"bs is the wheel will stick out 1" farther on each side..

this will aslo cause increase scrub radius and force need to turn said tires.... cause more flex/pressure on all steering linkages..