2019 Sierra- largest tire on stock suspension

[Mac89]

Did anyone figure out if the 285/65r18s would fit on it with the stock suspension?

[Nosaves]

285 65 r18 Ridge Grapplers on stock suspension. Still some room in the wheel well at full lock both ways. 

[Russ Currier]

Has anyone tried 295/70R18 on a Trail Boss? I don't feel the stock Durateks really fill the wheel wells very well (looks too small). 

 

Also, is it possible to have the speedo calibrated so it reads true after tire upgrade? 

 

[eppieguy]

1 hour ago, Russ Currier said:

Has anyone tried 295/70R18 on a Trail Boss? I don't feel the stock Durateks really fill the wheel wells very well (looks too small). 

 

Also, is it possible to have the speedo calibrated so it reads true after tire upgrade? 

 

Yes, Hypertech sells a re calibration module to correct your speedometer. 

[Russ Currier]

Yeah, I see that for $225 which I guess if I want larger tires and want the speedo correct and the gas mileage calculated correctly, I will need one. [emoji2373]


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[Sixel]

@Nosaves is that an 18” wheel or 20” in pic above?

[Taz56]

I put 275 / 60R20's on and 1.5" spacers and I have some serious rub. It is not when I am on flat surface driving it is when I have to go up any type of lip. For example getting in and out of my driveway or coming off the street and into a mall parking lot. When the tire will be lifted up a little into the air. But if I am just driving down the road I have no issues at all. 

 

I asked someone to turn my wheel all the way in one direction and then all the way in the other direction and I do not see it rubbing at all or hitting anything. I need to get under the truck and see if it is rubbing somewhere on the other side. I am surprised if that is the case as I pulled the tires out with the spacers. 

 

It is snowing today and will be snowing all week, plus it gets dark before I even get home from work so this weekend I will be crawling under it and having a look at what is going on, and where.

[AJMBLAZER]

The wheel spacers are your issue. 

[Taz56]

13 hours ago, AJMBLAZER said:

The wheel spacers are your issue. 

 

I found the rub, I do not believe it is from the spacers at all. Plus on my 2014 I had no spacers and my winter tires rubbed as well.  

[nstew1991]

I used the Motofab 3” front, 2” rear leveling kit and just fit 295/65/20 (35.1x11.6) true dimensions without issue. At full lock the tire rubs the stock mud flap barely. I haven’t cut the flap because I haven’t heard any contact while driving. Tires are Nitto Terra G2’s

[2020gmc]

Lt295/55r20 in inches 32.8x11.2r20 stock height no rub they are nitto ridgegrapplers 10ply

[2020gmc]

[2020gmc]

[Flatblack83]

On 11/4/2019 at 10:14 AM, Taz56 said:

I put 275 / 60R20's on and 1.5" spacers and I have some serious rub. It is not when I am on flat surface driving it is when I have to go up any type of lip. For example getting in and out of my driveway or coming off the street and into a mall parking lot. When the tire will be lifted up a little into the air. But if I am just driving down the road I have no issues at all. 

 

I asked someone to turn my wheel all the way in one direction and then all the way in the other direction and I do not see it rubbing at all or hitting anything. I need to get under the truck and see if it is rubbing somewhere on the other side. I am surprised if that is the case as I pulled the tires out with the spacers. 

 

It is snowing today and will be snowing all week, plus it gets dark before I even get home from work so this weekend I will be crawling under it and having a look at what is going on, and where.

That tire size is stock on many trucks that come with 20's.

[mistaare]

19 hours ago, 2020gmc said:

Did I read that correctly, they are the same size as stock? 

 

They look great, I love the Elevations. How much of a MPG hit did you take with the 10 ply? 

 

I would love love the same rim/combo on my AT4.