Largest Functional Tire Without Mods

[Brad@SuperiorCO]

I'm just waiting for a little more clarity on the driveshaft failure warranty, and for the ability to clone/replace the TPMS so I can rotate the big MT's at my leisure.

Red Noland put my tires on, no warranty issue. I didn't lift, I don't believe it is necessary with the 155/85/17. I believe the lift is the issue with the driveshaft warranty. I kept the stock TPMS on th steelies, so no issue doing a 5 tire rotation.

 

[Brad@SuperiorCO]

This thread needs more photos.

 

[TCMColorado]

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Rocking the rare silver paint with the Mickey tires. Looking good.

 

[AngusMacG]

This thread needs more photos.

There’s a separate thread with pics on tire upragdes…

 

[Carolina Grenadier]

I am strongly leaning toward the MT Baja Boss when I get my Grenadier. Are they available for the 18 inch steel wheels or only the 17 inch?

 

[JHIG1]

I am strongly leaning toward the MT Baja Boss when I get my Grenadier. Are they available for the 18 inch steel wheels or only the 17 inch?

To my knowledge they don't offer the 18….I sold my 18’s for 17’s….happier with it for the vehicle imo

 

[mattexplore]

I have 255/80-R17 BFGoodrich HD Terrain tires on my ‘24.

I love the ‘pizza cutter’ look, and the appearance of the HD Terrain. It really reminds me of a modern Michelin XZL.

At first I had installed them without any suspension modification and they were largely fine. However after a 30mm front/rear lift the truck has really changed its manners and it’s very nervous on the highway.

It’s been aligned twice at the dealer to factory specifications, and I’ve tried various tire pressure and shock compression settings. I’ve also had the ability to put some miles on stock and modified trucks for a little A/B testing.

Maybe I’m just too sensitive to chassis setup (Motorsport background), but the vehicle is really struggling on rough pavement on the highway. Enough that I’m considering switching to a wider tire, like a 285/70-R17.

With the 255 and the lift, the Grenadier is now tramlining on worn highway pavement and some understeer has been added which requires more steering angle on sweepers than feels appropriate. I don’t like to take it over 70 as it gets a bit loose in the rear if the pavement isn’t perfect and henceforth unpredictable.

One item to consider is that perhaps the high void tread design of the BFGoodrich Terrain does not provide enough grip. In 255/80-R17 the actual tread surface of the HD Terrain is about 8” wide. That’s narrow for 6000+ pounds. Perhaps an AT 255 tire would perform better.

 

[landmannnn]

I have 255/80-R17 BFGoodrich HD Terrain tires on my ‘24.

I love the ‘pizza cutter’ look, and the appearance of the HD Terrain. It really reminds me of a modern Michelin XZL.

At first I had installed them without any suspension modification and they were largely fine. However after a 30mm front/rear lift the truck has really changed its manners and it’s very nervous on the highway.

It’s been aligned twice at the dealer to factory specifications, and I’ve tried various tire pressure and shock compression settings. I’ve also had the ability to put some miles on stock and modified trucks for a little A/B testing.

Maybe I’m just too sensitive to chassis setup (Motorsport background), but the vehicle is really struggling on rough pavement on the highway. Enough that I’m considering switching to a wider tire, like a 285/70-R17.

With the 255 and the lift, the Grenadier is now tramlining on worn highway pavement and some understeer has been added which requires more steering angle on sweepers than feels appropriate. I don’t like to take it over 70 as it gets a bit loose in the rear if the pavement isn’t perfect and henceforth unpredictable.

One item to consider is that perhaps the high void tread design of the BFGoodrich Terrain does not provide enough grip. In 255/80-R17 the actual tread surface of the HD Terrain is about 8” wide. That’s narrow for 6000+ pounds. Perhaps an AT 255 tire would perform better.

The perceived wisdom for the type of tyres with large blocks is that since each block is tall and narrow and not linked to the rest of the tread apart from at their base, is that they are free to deflect right/left/front/back.



So when you go around a corner, the blocks in contact with the road deflect, then the next blocks touch the road and immediately deflect. Hundreds of times per second of course.

This give the feeling of understeer or oversteer. One reason FI and other motorsport drivers dislike rain tyres as they immediately lose the sensation of grip. Changing pressures doesn't make much difference, hot tyres are more wobbly too. Although as the rubber wears the blocks are less tall and it improves the situation.

ATs are better on the road, but lose out off road.