Biggest tire for lifted trailblazer and wheel spacers question

zombiexsoldier

Active Member
I have a 2007 4wd trailblazer. I have a truxxx lift kit installed on it which is a suspension lift for 2.5inch in the front 1.25 in the rear. It sit perty much leveled. I am about to get 1.5inch wheel spacers installed and I just would like to know if I can fit 265/70/17 tire on stock rims. The tire I have been looking at is general grabbers at2. Please help
 

tbyoda

Well-Known Member
zombiexsoldier said:
I have a 2007 4wd trailblazer. I have a truxxx lift kit installed on it which is a body lift for 2.5inch in the front 1.25 in the rear. It sit perty much leveled. I am about to get 1.5inch wheel spacers installed and I just would like to know if I can fit 265/70/17 tire on stock rims. The tire I have been looking at is general grabbers at2. Please help
Please take look at this thread, a lot of good data. OffRoad TB - View topic - Lift/Tire Size Chart

Max tire size dictated by the gearing for example 3.42 gears = max tire is 32" the 265/70R17 is 31.61" so with a 2.5" body lift and spacers you should be good with any fender cutting but look over the thread.

Offroadtb.com Tire Size Calculator

Offroadtb.com Gear Ratio Calculator
 
OP
OP
Z

zombiexsoldier

Active Member
the roadie said:
Welcome! Just for posterity, the Truxxx spacer kit is a suspension, not a body, lift.
o I seen you a lot on trailvoy but I don't think people use that anymore but would you know what this biggest tire I could fit?
 

c bausch

Well-Known Member
Well i had a 2.5 " lift with 285's a little fender plastic trim and they fit good . My profile picture is w/ the wheels and lift
 

HARDTRAILZ

Moderator
265s rubbed with my 2.5 inch lift...

there is a ton of info available if you search. I believe evan a few charts of what fit and doesn't. Maybe even chart of who is running what.
 

Pittdawg

Well-Known Member
zombiexsoldier said:
I have a 2007 4wd trailblazer. I have a truxxx lift kit installed on it which is a suspension lift for 2.5inch in the front 1.25 in the rear. It sit perty much leveled. I am about to get 1.5inch wheel spacers installed and I just would like to know if I can fit 265/70/17 tire on stock rims. The tire I have been looking at is general grabbers at2. Please help
Roadie...correct me if I'm wrong but I seem to recall you posting awhile back a lift does nothing to change the proximity of the ball joint to the width of the tire correct? I.e., a lift may help with vertical clearance but in terms of going to a 265 or wider tire the lift does nothing?
 

The_Roadie

Founding Member
Administrator
Pittdawg said:
Roadie...correct me if I'm wrong but I seem to recall you posting awhile back a lift does nothing to change the proximity of the ball joint to the width of the tire correct? I.e., a lift may help with vertical clearance but in terms of going to a 265 or wider tire the lift does nothing?
That's the dirty little secret. :thumbsup: The challenge of the upper ball joint location is entirely defined by the steering knuckle design. A lift helps you not rub a larger tire on the fender well lining, but when you get over 30.5" diameter, the upper ball joint overhang is the ultimate restriction. Everybody contemplating larger tires needs to spend ten minutes looking the suspension over and understanding what dimensions change when it cycles up and down. The ball joint to corner of the tire dimension is defined entirely by the steering knuckle design. Wider and larger tires on the OEM rim will push the outer edge of the tire out and up, but the inner edge will go in and up. And that's where the ball joint lives.

Aftermarket rims can push the entire tire outwards, but you have to do the backspacing math to see if it will hit. :yes: Or put one on and try it if the math is too hard. :lipsrsealed:
 

Darkrider_LS

Well-Known Member
This much i have learned thus far from reading on both here and ortb. Max you can clear in stock config is 30.5-30.6 depending on tire. (Wrangler silent armors are 30.6 and i have seen them on stock TBs a few times now). Using Marks spacers on stock Full size or TB rims depending on which bolt pattern you go with gives you a 4.5 back space allowing a taller tire to be fitted to the TB. If im not mistaken this allows a 31" on a 2" lift and a 32" on a 2.5 and from the sounds of it around a 33" on a 3" lift. Gearing being your ultimate limitation. Here is a chart i found on another forum when i was asking what max tire size can be ran on what gearing on my full size truck.

Note: this is not the original, just an edited version showing ideal for what gearing from the looks of it.

On the chart...
Yellow means better fuel economy
Green is stock like gearing
Red is better suited to offroad conditions
 

Attachments

Pittdawg

Well-Known Member
That's why I need Shortbus to respond. He indicates he has a 31.7 diameter tire with a lift but makes no mention of wheels spacers.
 

Short Bus

Well-Known Member
Pittdawg said:
With no wheel spacers?
I have Mark's 1.5" wheel spacers, before that I had 265/65/17s without spacers or a lift.
 

Pittdawg

Well-Known Member
Short Bus said:
before that I had 265/65/17s without spacers or a lift.
That's what I'm running now. Wouldn't mind a small lift up front but don't want to go to spacers.
 

Jimmyz

Member
Sorry but I'm new to this site. Who is Mark, and where can I buy some of his 1 1/2" wheel spacers?
 

Short Bus

Well-Known Member
Jimmyz said:
First thing I'd doing is replacing all the shocks. Bought some Monroe Sensa-Trac Quick Struts for the front and Sensa-Trac for the rear.

Will probably add a 1 1/2" spacer in the front to level it out some. Truck has a lot of rake to it.

Hopefully if I can get the money together I'm planning on a set of wheel adopter and a set of 17" Chrome Escalade wheel with GMC center caps. (I already have the wheels)
Jimmyz said:
OK, is he the guy that sells the wheel spacer to forum members for something like $169.00 ?
The Wheel spacer aren't for lift (you need strut spacers for that), they push your wheels out so bigger tires won't hit/rub the ball joint that the engineers at GM put directly over the tire.
 

Jimmyz

Member
Short Bus said:
The Wheel spacer aren't for lift (you need strut spacers for that), they push your wheels out so bigger tires won't hit/rub the ball joint that the engineers at GM put directly over the tire.
Yes I know that. Need them for the Escalade wheels
 
OP
OP
Z

zombiexsoldier

Active Member
zombiexsoldier said:
I have a 2007 4wd trailblazer. I have a truxxx lift kit installed on it which is a suspension lift for 2.5inch in the front 1.25 in the rear. It sit perty much leveled. I am about to get 1.5inch wheel spacers installed and I just would like to know if I can fit 265/70/17 tire on stock rims. The tire I have been looking at is general grabbers at2. Please help
I now have the tires and they fit with minimal trimming
View attachment 30489
View attachment 30490
 

Attachments

OP
OP
Z

zombiexsoldier

Active Member
Pittdawg said:
This must be without spacers? I can't imagine you need to trim with a lift and spacers?
this is with 1.5inch spacers and suspension lift there was minimal trimming the guy said who put it on for me he didnt charge me for trimming cause he only had to do slight trimming he said
 

HARDTRAILZ

Moderator
Pittdawg said:
This must be without spacers? I can't imagine you need to trim with a lift and spacers?
I had to w suspension only lift n spacers to fit 265s.
 

Tblazer68

New Member
I have 2.5 inch lift on 2007 trailblazer. Will 8x18 rims fit? And what size tire would any of you all suggest. Thanks
 

HARDTRAILZ

Moderator
If the offset of the 18x8 is right, it may fit larger than 30.5 actually. We really would need more data to recommend a tire size.
 

paul2005tb

Well-Known Member
I have a 3in body lift and a 3in suspension lift. I have Marks wheel spacers too. The only limitation I have is my 3.73 rear gear. Even though I drive like an old lady and never tow anything Im going to keep my tire diameter below 33.8. Im looking at 285/70/17 or 295/70/17 or 255/80/17.
 
Last edited:

paul2005tb

Well-Known Member
took a careful look up on that "chart of all charts" showing what tires folks with 6in lift and spacers are able to use. I did not see a match for my case. If you have a 6in lift (3in suspension, 3in body = 3+3 lift) and you have MarkMC wheel spacers can you tell me if you are running 33in or 34in tires and what width are you running. Id like to know if I can get up to 33/10, 33/11 or 33/12 without cutting any metal. My measurements suggest I can get 33/10 but that 33/12 will be too close with the upper ball joint even with the spacers and will very nearly interfer with the metal aft of the front wheels when the wheel turns. Well these are my deductions based on a tape measure.

If you have greater than a 32.7in tire on a 3+3 lift with wheel spacers without any cutting of metal please tell me what you have.
 
Last edited:

Online statistics

Members online
11
Guests online
228
Total visitors
239

Forum statistics

Threads
19,644
Messages
583,287
Unanswered questions
1
Answered questions
1
Members
12,373
Latest member
Rob65
Top Bottom