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what is the largest tire i can put on my 2021 custom Trail Boss with a 1.75 leveling kit

Ready Lift says 285/75r18 with no rubbing if you have an 18” wheel.
 
Ready Lift says 285/75r18 with no rubbing if you have an 18” wheel.
I guess it would decide which brand you go with, both Niito Recon Grapplers and TOYO hane a 285/75 R18 but it is 34.84" diameter and I think that will rub. Can anyone confirm this diameter will fit?
 
I guess it would decide which brand you go with, both Niito Recon Grapplers and TOYO hane a 285/75 R18 but it is 34.84" diameter and I think that will rub. Can anyone confirm this diameter will fit?
I’m thinking a 285/70 r18 would be the ideal fit. Nitto recon grappler.
 
I'm running 295/70R18 (34.3"x11.6") Falken Wildpeaks on completely stock suspension and wheels. I removed the mud flaps and only have occasional very minor rubbing in reverse on the rear side of the fender well at full lock.
 

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I'm running 295/70R18 (34.3"x11.6") Falken Wildpeaks on completely stock suspension and wheels. I removed the mud flaps and only have occasional very minor rubbing in reverse on the rear side of the fender well at full lock.
I’m thinking of doing 285/70R18. Do you think I need to trim or remove anything?
 
I’m thinking of doing 285/70R18. Do you think I need to trim or remove anything?
Based on my experience, with a bigger tire, I would say if you remove the mud flaps you'd be fine. I plugged the fender holes with trim rivets (link below)..., but there are other options out there that cost a bit. You can always trim the flaps with trial and error until you get no rubbing. There are a few youtube videos of guys taking that route... Also Bilstein 5100 series shocks for the TB offer up to 1" of front lift if you don't want to go with a full leveling kit (the 6100 series adds a new spring and bigger piston for better off-road handling but more$$). I will be adding that upgrade when I wear out the Ranchos. Good luck! Have fun!

 
Also a 295 tire is too wide for a stock wheel. That is why it rubs. Rule of thumb “most of the time” you can go one size bigger. 285 is the widest you can go and 70 is the tallest you could go. I wouldn’t change tire size unless you do a level or a lift.
 
Based on my experience, with a bigger tire, I would say if you remove the mud flaps you'd be fine. I plugged the fender holes with trim rivets (link below)..., but there are other options out there that cost a bit. You can always trim the flaps with trial and error until you get no rubbing. There are a few youtube videos of guys taking that route... Also Bilstein 5100 series shocks for the TB offer up to 1" of front lift if you don't want to go with a full leveling kit (the 6100 series adds a new spring and bigger piston for better off-road handling but more$$). I will be adding that upgrade when I wear out the Ranchos. Good luck! Have fun!

And I am running 295/70R18 tires on stock wheels with no lift, level, or spacers, mud flaps removed... only rub is once in a while on the rear of the felt fender liner in reverse when the suspension is in compression. Doesn't bother me... If you tried to run this set up on a truck that has an aftermarket upper control arm with a bigger ball joint, the tire would hit the UCA and a spacer would be needed for stock wheels or add aftermarket wheels with appropriate offset. I am really happy with my truck in this configuration as a daly driver. If I wanted to go with anything bigger on a half-ton IFS I would solid axle swap it and really get after it! Makes me miss my CJ5 a little bit...:love:
 

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Just got the 285/70r18 Nitto Recon Grapplers installed. They look amazing and can confirm there is zero rubbing with zero modifications. I do have the RL 1.75 leveling kit. A 295 tire would have definitely rubbed on the upper control arm and the wheel well protector.
 
Just got the 285/70r18 Nitto Recon Grapplers installed. They look amazing and can confirm there is zero rubbing with zero modifications. I do have the RL 1.75 leveling kit. A 295 tire would have definitely rubbed on the upper control arm and the wheel well protector.
Thank you, looks awesome, I am going with the same tire.
 
Can anyone confirm if this would also be the case for the 2023 model? I know there isn’t much difference between the two but would just like to know for sure. Thanks!
 
Can anyone confirm if this would also be the case for the 2023 model? I know there isn’t much difference between the two but would just like to know for sure. Thanks!
Same question. I have a 2023 with 3.0 Duramax and am really hoping I can do a 1.75 level and 285/60r20 which has the same stats, 33.7 with 11.2 width. Would like to do it on my stock 20 inch wheels. Hopefully no spaces, no trimming.
 

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