What does Rough Country Recomend

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

87silveradok20

Full Access Member
Joined
Jun 29, 2014
Posts
684
Reaction score
138
Location
Ohio
First Name
Levi
Truck Year
1987
Truck Model
Silverado k20
Engine Size
350
I was wondering what tire sizes and wheel offset RC recommends for a 4" and 6'' lift
 

87silveradok20

Full Access Member
Joined
Jun 29, 2014
Posts
684
Reaction score
138
Location
Ohio
First Name
Levi
Truck Year
1987
Truck Model
Silverado k20
Engine Size
350
so can you guys answer a question or not
 

MadOgre

Full Access Member
Joined
May 4, 2014
Posts
4,090
Reaction score
51
Location
NA
First Name
NA
Truck Year
NA
Truck Model
NA
Engine Size
NA
Any size you can fit under the wheel wells. Even if that involves a sawzall :)
 

87silveradok20

Full Access Member
Joined
Jun 29, 2014
Posts
684
Reaction score
138
Location
Ohio
First Name
Levi
Truck Year
1987
Truck Model
Silverado k20
Engine Size
350
Any size you can fit under the wheel wells. Even if that involves a sawzall :)

but i dont want to involve a sawzaw on my truck, if it were a wood/mud truck maybe. but nor on my fancy truck
 

bucket

Super Moderator
Staff member
Super Moderator
Joined
Aug 3, 2010
Posts
30,620
Reaction score
28,869
Location
Usually not in Ohio
First Name
Andy
Truck Year
'77, '78, '79, '84, '88
Truck Model
K5 thru K30
Engine Size
350-454
A lot is based on opinion. Are you willing to trim at all? Do you still want decent ride quality? Do you prefer wide wheels/tires or a little more narrow? Do you like the big lift look or the stuffed tire look?
 

87silveradok20

Full Access Member
Joined
Jun 29, 2014
Posts
684
Reaction score
138
Location
Ohio
First Name
Levi
Truck Year
1987
Truck Model
Silverado k20
Engine Size
350
A lot is based on opinion. Are you willing to trim at all? Do you still want decent ride quality? Do you prefer wide wheels/tires or a little more narrow? Do you like the big lift look or the stuffed tire look?

i like stuffed tires and i would perfer to not trim
 

350runner

Full Access Member
Joined
Feb 9, 2013
Posts
2,858
Reaction score
224
Location
tx
First Name
Ceasar
Truck Year
82
Truck Model
c10
Engine Size
350
I too like the stuffed look here is what's possible 33x10.5x18

You must be registered for see images


Sent from the dust in front of you!
 

bucket

Super Moderator
Staff member
Super Moderator
Joined
Aug 3, 2010
Posts
30,620
Reaction score
28,869
Location
Usually not in Ohio
First Name
Andy
Truck Year
'77, '78, '79, '84, '88
Truck Model
K5 thru K30
Engine Size
350-454
i like stuffed tires and i would perfer to not trim

That makes it a little more difficult.

With a basic 4 inch lift that is not very soft, a 35x12.5 on an 8 inch wide rim should fit with no or very little trimming. But if the springs are flexy at all and the rims are 10 inches wide, you may want to stick with 33's.
 

87silveradok20

Full Access Member
Joined
Jun 29, 2014
Posts
684
Reaction score
138
Location
Ohio
First Name
Levi
Truck Year
1987
Truck Model
Silverado k20
Engine Size
350
That makes it a little more difficult.

With a basic 4 inch lift that is not very soft, a 35x12.5 on an 8 inch wide rim should fit with no or very little trimming. But if the springs are flexy at all and the rims are 10 inches wide, you may want to stick with 33's.

ok thats what i thought i may do a 5" lift front/ 4" lift rear and 35s, that should clear right?
 

bucket

Super Moderator
Staff member
Super Moderator
Joined
Aug 3, 2010
Posts
30,620
Reaction score
28,869
Location
Usually not in Ohio
First Name
Andy
Truck Year
'77, '78, '79, '84, '88
Truck Model
K5 thru K30
Engine Size
350-454

87silveradok20

Full Access Member
Joined
Jun 29, 2014
Posts
684
Reaction score
138
Location
Ohio
First Name
Levi
Truck Year
1987
Truck Model
Silverado k20
Engine Size
350
this is what bds recomends so you think this will fit? 35" x 12.50" w/15 x 8 and 3-1/2" back spacing
 

bluex

Full Access Member
Joined
May 9, 2013
Posts
1,987
Reaction score
2,637
Location
Spartanburg SC
First Name
Paul
Truck Year
1978
Truck Model
C15
Engine Size
350
Have you called rough country to ask them? You can download installation instructions from there site an in them it lists recommended tire sizes. At least it did in the kit for my 98...
 

bucket

Super Moderator
Staff member
Super Moderator
Joined
Aug 3, 2010
Posts
30,620
Reaction score
28,869
Location
Usually not in Ohio
First Name
Andy
Truck Year
'77, '78, '79, '84, '88
Truck Model
K5 thru K30
Engine Size
350-454
this is what bds recomends so you think this will fit? 35" x 12.50" w/15 x 8 and 3-1/2" back spacing

Like I said, it depends on the springs. That setup will require at least a little trimming on the front fenders. Rough Country springs are a little more firm and trimming might not be required.
 

87silveradok20

Full Access Member
Joined
Jun 29, 2014
Posts
684
Reaction score
138
Location
Ohio
First Name
Levi
Truck Year
1987
Truck Model
Silverado k20
Engine Size
350
Like I said, it depends on the springs. That setup will require at least a little trimming on the front fenders. Rough Country springs are a little more firm and trimming might not be required.

OK Thanks
 

Grumpy Grizzly

Full Access Member
Joined
Sep 10, 2015
Posts
72
Reaction score
11
Location
Kalispell, MT
First Name
Josh
Truck Year
1989
Truck Model
Suburban 1500
Engine Size
350
Like I said, it depends on the springs. That setup will require at least a little trimming on the front fenders. Rough Country springs are a little more firm and trimming might not be required.

I know when I looked it for my ride the back spacing should be 4.5, other wise you will rub on the turns.

With the 4" you can run 35" tires street and 33" for off road.

With the 6" you can run 37" street and 35" off road.

So if you are running it as a mall crawler then 35" will be fine for this application and you will get your studied look.

Also the springs do make a difference and you will want to go with a 35x12.50 R 15 on a 10" wide rim so you can have some wiggle room in your fender wells.

If you run a 12.50 tire on an 8" wide rim you will end up wearing out the center of your tread too early because it will bubble your tire too much. Now you can get away with it if you run the tires at a lower pressure but I wouldn't recommend this. It also can cause issues with your side walls as they will be bowing in towards the rim more than the tire was designed to do.
 
Last edited:

Latest posts

Forum statistics

Threads
44,416
Posts
957,114
Members
36,752
Latest member
78 squarebody
Top