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Largest tire size on stock 20 with a 2.25 level/lift

vicdanj

By vicdanj
in Tires, Wheels & TPMS

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vicdanj Enthusiast

vicdanj

Posted
Posted

Hello all.... I am sure most of us are looking to upgrade tires etc and get rid of the face plant look on our 2014s.... I have a 2014 crew cab 4x4 and I am planning on installing a 2.25 lift upfront and installing some new tires but I wanted to scan the group on tire size. With that lift will a 305/55 r20 fit without rub on stock 20" rim? Or are we stuck with 275/60 r20.....

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losky79 Enthusiast

losky79

Posted
Posted

I used to have 295/55R20 Nitto Trail Grapplers with a 2" RC leveling kit. They fit very well and looked great. I got rid of them because of the ride quality and poor fuel mileage, which I knew prior to buying but I figured I give them a try any way. The Nitto's never rubbed once, even when flexing the truck pretty good doing some light off-roading. I was told by a Discount tire rep that 305's will not fit unless you buy a different wheel with a wider offset. I don't know much about wheels, but I will take his word for it or maybe he was just trying to sell me a set of wheels.... :)

 

CJ

jtenney Enthusiast

jtenney

Posted
Posted

The 305/55/20 will rub on the stock rims. It is pretty significant. During full lock turns, one tire rubs on the upper control arm and the other tire rubs hard on the sway bar. Not good.

 

I have aftermarket wheels (20" with +18 offset instead of +30) and I can still get a slight rub on the sway bar in full steering lock rolling forward downhill.

vicdanj Enthusiast

vicdanj

Posted
  • Author
Posted

The 305/55/20 will rub on the stock rims. It is pretty significant. During full lock turns, one tire rubs on the upper control arm and the other tire rubs hard on the sway bar. Not good.

 

I have aftermarket wheels (20" with +18 offset instead of +30) and I can still get a slight rub on the sway bar in full steering lock rolling forward downhill.

Is that with a front lift of 2.25?

jtenney Enthusiast

jtenney

Posted
Posted

Is that with a front lift of 2.25?

 

My truck has a 2.0" front level (lift) and I can say for sure the same problems would apply to the 2.25" front level. The rubbing is on the side of the tire due to width, not the top of the tire due to height.

 

There are a few 285/60/20 tires out there which give you a slight bump over 275/60/20. They should fit on stock wheels. But 305 is no good on stock wheels.

 

Jeff

vicdanj Enthusiast

vicdanj

Posted
  • Author
Posted

 

My truck has a 2.0" front level (lift) and I can say for sure the same problems would apply to the 2.25" front level. The rubbing is on the side of the tire due to width, not the top of the tire due to height.

 

There are a few 285/60/20 tires out there which give you a slight bump over 275/60/20. They should fit on stock wheels. But 305 is no good on stock wheels.

 

Jeff

What was the tire brand and model in question that gave you the rub for the 305s? I ask since some run smaller than others and trying to figure out what the threshold is...12inch vs 12.4 etc

Many thanks

V

jtenney Enthusiast

jtenney

Posted
Posted

What was the tire brand and model in question that gave you the rub for the 305s? I ask since some run smaller than others and trying to figure out what the threshold is...12inch vs 12.4 etc

Many thanks

V

 

Yeah good point. I run Nitto Terra Grappler LT305/55/20, wheels +18 offset, and a 2" RC level. My setup has a very slight rub on the sway bar at full steering lock. I also see less than half an inch of clearance to the upper control arm at full steering lock.

 

Based on my setup, I would predict a very hard rub on the sway bar with OE wheels (+30 offset as I understand it) and the rest of the setup the same. I would also predict a good solid rub on the upper control arm with OE wheels.

 

Bottom line is I'm just predicting how the 305's would behave on stock wheels. And you're right it is tire brand / tire model dependent.

Saleenpowr Enthusiast

Saleenpowr

Posted
Posted

In running 295/55/20' Toyo MT's on a 2" RC level and have plenty of room. There are a number of guys over at gmfullsize that run 305's on a 2.5" level and have no rub.

Jon A Senior Enthusiast

Jon A

Posted
Posted

Are you only concerned about width? I'm going to try 275/65's as soon as mine gets here as I want to add as much height as possible. I think they'll be OK with the stock wheels and a level....

vicdanj Enthusiast

vicdanj

Posted
  • Author
Posted

In running 295/55/20' Toyo MT's on a 2" RC level and have plenty of room. There are a number of guys over at gmfullsize that run 305's on a 2.5" level and have no rub.

I have seen that as well which leads to all the confusion some say 305/55r20 no probs with stock rim and others say rub... I would really like raw numbers on what fits such as with a level you can go 33 diameter with 12.x as width etc.

jtenney Enthusiast

jtenney

Posted
Posted

In running 295/55/20' Toyo MT's on a 2" RC level and have plenty of room. There are a number of guys over at gmfullsize that run 305's on a 2.5" level and have no rub.

 

If you check for a rub on a hoist or while parked, it might not show up. In my experience, I saw almost a half an inch of clearance to the sway bar when I checked that way even though I can get a slight rub on the sway bar when driving.

 

I can hear the slight rub on the sway bar when I roll down the driver window, turn off the stereo, hold the steering wheel at full lock left, and drive slowly on pavement for more than about 10 feet. That's when the rub starts. Then if I stop and have somebody hold the steering wheel before I let go, I can get out, crawl under the truck and see what's rubbing. It's on the sway bar.

 

If the OE wheels really are +30 offset, then I think even 295/55/20 on OE wheels might rub this same way. I hate to be one contributing to the confusion, but I see what I see on my setup.

 

Remember, pavement, full lock, roll for a bit, keep holding the steering wheel.

 

Saleenpowr can you check yours this way? If you still can't get a rub then maybe the 295's run small or the 305s run big from Toyo/Nitto. Also is your truck a 4x4, Z71, DC, Chevy, or what all, just in case its relevant.

 

Jeff

Saleenpowr Enthusiast

Saleenpowr

Posted
Posted
In running 295/55/20' Toyo MT's on a 2" RC level and have plenty of room. There are a number of guys over at gmfullsize that run 305's on a 2.5" level and have no rub.

 

If you check for a rub on a hoist or while parked, it might not show up. In my experience, I saw almost a half an inch of clearance to the sway bar when I checked that way even though I can get a slight rub on the sway bar when driving.

 

I can hear the slight rub on the sway bar when I roll down the driver window, turn off the stereo, hold the steering wheel at full lock left, and drive slowly on pavement for more than about 10 feet. That's when the rub starts. Then if I stop and have somebody hold the steering wheel before I let go, I can get out, crawl under the truck and see what's rubbing. It's on the sway bar.

 

If the OE wheels really are +30 offset, then I think even 295/55/20 on OE wheels might rub this same way. I hate to be one contributing to the confusion, but I see what I see on my setup.

 

Remember, pavement, full lock, roll for a bit, keep holding the steering wheel.

 

Saleenpowr can you check yours this way? If you still can't get a rub then maybe the 295's run small or the 305s run big from Toyo/Nitto. Also is your truck a 4x4, Z71, DC, Chevy, or what all, just in case its relevant.

 

Jeff

 

Of course if I go full lock and hold it there I have a slightest of rub on my sway bar. Almost every truck has that with 295 or 305's on a leveled GM truck. It's not going to hurt anything if there is a small rub. It's rubber hitting solid steel....not gonna do any damage bro.

 

When most people ask if a certain tire size fits they are concerned about trimming the wheel wells. Most people just live with the slight sway bar rub.

Chris Senior Enthusiast

Chris

Posted
Posted

Here is what full lock sway bar rub lools like after 2.5 years

 

a5araqyn.jpg

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