2014+ Leveling Kits

nando87 · October 13, 2015

I run my MT tires around 38-40psi

Rawyzf · October 13, 2015

I was curious too, what you guys were running on E/LT tires. My installer put mine at 60, was really harsh. I put them down to 46, but I am thinking I can still go lower (as long as I don't have a load).

tnchevy · October 14, 2015

You have to be careful running low psi on LT tires. You have to add more air on a LT tire to equal the load capacity of the OEM P rated tires. Toyo has a conversion chart you can download that will tell you where you need to be. On my last truck (2002 silverado) I ran the stock size tire but needed to run them at around 48 psi to equal the same load capacity as the stock tires at 35 psi. I ended up running 48 psi in the front tires and 44 psi in the back tires. Running low psi in a LT tire can cause it to build up too much heat.

Rawyzf · October 14, 2015

You have to be careful running low psi on LT tires. You have to add more air on a LT tire to equal the load capacity of the OEM P rated tires. Toyo has a conversion chart you can download that will tell you where you need to be. On my last truck (2002 silverado) I ran the stock size tire but needed to run them at around 48 psi to equal the same load capacity as the stock tires at 35 psi. I ended up running 48 psi in the front tires and 44 psi in the back tires. Running low psi in a LT tire can cause it to build up too much heat.

Yeah, I know you can't (shouldn't) go as low as P tires, but I also know setting them at 64 PSI for daily driving with no load isn't necessary .

Do you have a link to this chart? I'll head over to thier site too and try to find it. Thank you!

tnchevy · October 14, 2015

I have the chart on my computer at the house but I will try to find the link. I used this chart several times over the years because I get a new half ton work truck every few years that are base models with tiny tires P tires and we usually (well used to) put on a set of bigger LT AT tires within a month because of the rough roads I travel on. It has always come out to about the same though, some where between 45 to 50 psi and this applies wether it is a load range c, d, or e tire. So basically a C load tire (usually 50 psi max) should be aired up to around 45 psi and the same for a D or E (usually 80psi max tires) air them up to 45 psi or so as well. I run 265/70-17 Goodyear Kevlar AT Load Range E tires on my work truck and I keep them at 50 psi most of the time.

tnchevy · October 14, 2015

Here is the link

https://toyotires2-1524598101.netdna-ssl.com/assets/lib:toyo%20content/Application_of_Load_Inflation_Tables_20150623_Final.pdf

Look at pages 5 and 11, that will answer your questions of going from a P to an LT. It will also give you conversions for going to a bigger tire than OEM and what psi to run at.

Looking at the numbers if I replaced my OEM P265/65 18 tires with a set of LT 275/65 18 tires I would have to inflate them to 43 psi to carry the same load. The OEM tires at 35 psi have a load weight of 2469 but you divide that by 1.10 which gives the load weight to be 2245 lbs. The LT 275-65-18 tires have a load weight of 2130 lbs at 40 psi and 2310 lbs at 45 psi. The weight I need falls in the middle of that so you divide the difference by 5 (2310-2130 = 180 / 5 = 36. That would put 43 psi at a weight handling capacity of 2238 which is pretty close to the required 2245 lbs from GM.

Edited October 14, 2015 by tnchevy

Rawyzf · October 14, 2015

Here is the link

https://toyotires2-1524598101.netdna-ssl.com/assets/lib:toyo%20content/Application_of_Load_Inflation_Tables_20150623_Final.pdf

Look at pages 5 and 11, that will answer your questions of going from a P to an LT. It will also give you conversions for going to a bigger tire than OEM and what psi to run at.

Looking at the numbers if I replaced my OEM P265/65 18 tires with a set of LT 275/65 18 tires I would have to inflate them to 43 psi to carry the same load. The OEM tires at 35 psi have a load weight of 2469 but you divide that by 1.10 which gives the load weight to be 2245 lbs. The LT 275-65-18 tires have a load weight of 2130 lbs at 40 psi and 2310 lbs at 45 psi. The weight I need falls in the middle of that so you divide the difference by 5 (2310-2130 = 180 / 5 = 36. That would put 43 psi at a weight handling capacity of 2238 which is pretty close to the required 2245 lbs from GM.

Perfect, thank you!

I just did the math as well.

P265/65/18 @ 35psi = 2469

Divided By 1.10 = 2245 (Now need to match this number in LT in m size)

LT285/70/17 @ 45psi = 2285 (Where I am putting them)

LT285/70/17 @ 50psi = 2535

LT285/70/17 @ 65psi = 2910 (Where the shop put my tires)

That is close enough for me.

tyrich88 · October 15, 2015

I am looking into getting some 0 offset wheels and running some bigger tires on a 2" RC level
Has anyone successfully run 315/70R17's
Looking at BFG AT's

Rawyzf · October 15, 2015

I am looking into getting some 0 offset wheels and running some bigger tires on a 2" RC level

Has anyone successfully run 315/70R17's

Looking at BFG AT's

Pretty sure you'll need more than just a level to run that tire without rubbing. That tire is over 34".

tyrich88 · October 15, 2015

There are people on here running tires that wide with offset wheels, just not sure exactly what their set ups are. I didn't know if they would be too wide or not. I know the height works on a 295 with a little fender well liner trimming... just not sure about a 315.

Rawyzf · October 15, 2015

There are people on here running tires that wide with offset wheels, just not sure exactly what their set ups are. I didn't know if they would be too wide or not. I know the height works on a 295 with a little fender well liner trimming... just not sure about a 315.

I'm 285/70/17 with 0 offset and 2" level. No issues at all.

With a 315, you're theoretically 30 mm wider, so 15mm in and 15mm out. But you'd also be about 2" taller. I can tell you that I don't have 2" of room at full lock.

tyrich88 · October 15, 2015

Yeah, I've actually got 285/65/18's on my stock wheels right now without a level and they are perfectly fine. So I wondered if with a 0 offset wheel vs the 25 offset stock wheels a slightly wider tire and taller would rub any metal or anything. Because I am ok with trimming the felt fender liner if needed but if it rubs anything other than that i'm not even going to think about it.

rookhoe · October 15, 2015

I am looking into getting some 0 offset wheels and running some bigger tires on a 2" RC level

Has anyone successfully run 315/70R17's

Looking at BFG AT's

Edit: I just realized that what you want to run is a bigger diameter. You'll likely rub some.

I'm running a 0 offset wheel with 33" tires on a 2" RC level.

Sent from my iPhone using Tapatalk

Edited October 15, 2015 by rookhoe

ClemsonFan · October 16, 2015

What are y'alls thoughts on a Rough Country 2.5" vs CCM Off-road 2.5"? The Rough Country has a top and bottom spacer while the CCM gets the 2.5" with just a top spacer.

I am not sure which is better for the suspension components long term.

http://www.ccmoffroad.com/2007-pres-gmc-chevy-1500-front-2-5-leveling-kit-6-lug/

tyrich88 · October 16, 2015

Edit: I just realized that what you want to run is a bigger diameter. You'll likely rub some.

I'm running a 0 offset wheel with 33" tires on a 2" RC level.

Sent from my iPhone using Tapatalk

Thanks for the input! With the way yours looks I may just stick with 33's! Yours looks great! are those 33x12.5?