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73-87 Chevy _ GMC Trucks => Wheels & Tires => Topic started by: Samcro713 on March 21, 2012, 12:28:28 am

Title: Help 255/70R15 tires and wanting to drop
Post by: Samcro713 on March 21, 2012, 12:28:28 am

I have a 87 Silverado i just put a set of BFG tires 255/70R15(all around ) it looks good but i want to drop it the tires raised it up about 2"and not the look i want to go for. Has anybody dropped a truck useing this size tires. Any pictures,problems, or suggestions?

Title: Re: Help 255/70R15 tires and wanting to drop
Post by: Captkaos on March 21, 2012, 10:10:20 am

The smallest tire GM put on the R10's in 1987 was 195/75/15, the largest was 235/75/15.
Other sizes were 205/75/15 and 225/75/15.  Ground clearance decreases as does weight capacity.  Other than that not much different.

BTW, 255/70/15's are roughly 29" tall and roughly 10" wide from sidewall to sidewall (not tread), 235/75/15's are roughly 28.875" tall and roughly 9.25" from sidewall to sidewall (not tread), 195/75/15" is 26.5" tall and 7.67" sidewall

Title: Re: Help 255/70R15 tires and wanting to drop
Post by: DrDaryl on March 21, 2012, 11:57:32 am

I run 255 70R15's on my truck and like them (seems to be a popular choice around home) but I don't have any experience on lowering the truck.  My truck had 275 60R 15's at one time and frankly I liked the way they looked better and the truck did sit a little lower.  Chris, what size are those tires you run on those Impala SS rims?

Title: Re: Help 255/70R15 tires and wanting to drop
Post by: Captkaos on March 21, 2012, 01:16:26 pm

275/55/17's.  Same general height as the 235/75/15 that came stock, just a lot wider and bigger rim.

Title: Re: Help 255/70R15 tires and wanting to drop
Post by: SNWBLL on March 22, 2012, 04:10:02 pm

I have 255/70-15 BFG's on the front of my truck with a 4" drop. They only rub a little when going thru a big dip or cornering hard in curves. I may go a tad smaller next time, but I like the look.
The rear is 6" drop with 315/70-15's, don't rub at all. only once when going over uneven terrain and one side went way up and the other way down, but barely rubbed.
Wheels are all 15x8. I'll try to load pics. The avatar pic is awfully small.

Title: Re: Help 255/70R15 tires and wanting to drop
Post by: SNWBLL on March 22, 2012, 04:40:59 pm

Here's a side view.

Title: Re: Help 255/70R15 tires and wanting to drop
Post by: SNWBLL on March 22, 2012, 04:44:54 pm

Front passenger side.

Title: Re: Help 255/70R15 tires and wanting to drop
Post by: Samcro713 on March 27, 2012, 02:59:47 pm

Mike your truck looks sharp THANKS how or what did you use to dropp your truck? Anyone else with same tires or more Pictures

Title: Re: Help 255/70R15 tires and wanting to drop
Post by: Captkaos on March 27, 2012, 04:02:22 pm

Mike's truck has a suspension drop, there is no way you can get one that low with just tires.

Title: Re: Help 255/70R15 tires and wanting to drop
Post by: SNWBLL on March 28, 2012, 04:31:37 pm

Flip kit on rear and 3" drop spindles on front with a 1" drop spring and drop shocks.
i'll try to resize a few more pics and post below.
Thanks