295/55/20 Tire on LX570

[TeCKis300]

Tire fitment question, and this one is somewhat unique from the ongoing tire discussion in the tire and wheel database in that 1) LX570 and 2) 20" wheel

I'm considering going with a LT295/55/20 Toyo Open Country AT2 tire on my LX570. This size is rarely talked about as most everyone talks about rock warrior wheels 17" or LC 18" wheels.

Overall dimension 32.8", width 12.2". Diameter is similar to a 285/65/18 or 285/70/17 which are both known to fit well in the database. Just a tad wider than these.

The size is rare amongst 20" AT tires, and Toyo is just about the only mainstream brand to have. I believe it's a good fitment for the LX570 wheel, but would like to confirm, especially if anyone has the specific tire. I believe the concern is clearance to the upper a-arm more than anything else?

Also, anyone have feedback running a Load E LT tire on an LX570 on 20" wheels? I believe the suspension will handling these stiff tires without transferring too much harshness, but again, would like to hear.

 

[hankinid]

Also, anyone have feedback running a Load E LT tire on an LX570 on 20" wheels? I believe the suspension will handling these stiff tires without transferring too much harshness, but again, would like to hear.

The LX has the advantage of AHC, with a side benefit of comfort mode if you're feeling harshness...which in itself is in the eye of the driver and passengers. I run Toyo's (though not on 20's) in load range E, and normally I set the knob one stop down from sport mode.

 

[gaijin]

Also, anyone have feedback running a Load E LT tire on an LX570 on 20" wheels? I believe the suspension will handling these stiff tires without transferring too much harshness, but again, would like to hear.

Assuming you get them to fit, all I can do is advise on Cold Tire Inflation Pressure.

My recommendation is based on the Lexus recommendation for P285/50R20 tires on the LX570 which is 33psi Front / 35psi Rear. Please check the Driver side door jamb to see if this is the same for your LX570.

If that's the same, then the recommended Cold Tire Inflation Pressures for the LT295/55-20 tires would be 40psi Front / 42psi Rear.

Good luck.

HTH

 

[Taco2Cruiser]

I don't know if this will help, but to compare a bit. On rock warrior wheels with the 50mm offset and a 295/70r17 (33.5x12) tire with stock ride height, the tire hit the stock upper control arm hard when turning. This contact wasn't at the very end of the tire, it was more down the sidewalk so a shorter tire would not of made a difference. This testing was done stationary before driving.

 

[Willy beamin]

Have you considered 285/55/20 which is 11.7" width

 

[TeCKis300]

The LX has the advantage of AHC, with a side benefit of comfort mode if you're feeling harshness...which in itself is in the eye of the driver and passengers. I run Toyo's (though not on 20's) in load range E, and normally I set the knob one stop down from sport mode.

That's what I'm hoping for since the LX570 runs relatively low profile stock tires. Hoping it will handle the stiff load range E tires well since I'm adding relatively more sidewall by upsizing. Good to hear you've had good experience. What tire and size are you running?

I don't know if this will help, but to compare a bit. On rock warrior wheels with the 50mm offset and a 295/70r17 (33.5x12) tire with stock ride height, the tire hit the stock upper control arm hard when turning. This contact wasn't at the very end of the tire, it was more down the sidewalk so a shorter tire would not of made a difference. This testing was done stationary before driving.

This gets at the crux of my question. I know rock warriors have the benefit of 10mm more clearance on the inside. (OE 20" is 60mm offset) and that 295/70r17 size almost exactly matches the dimensions of a 295/55r20. It may come down to the specifics of the tire. What specific tire were you running in 295/70r17?

Have you considered 285/55/20 which is 11.7" width

Yes, and that would be the easy answer. Though I'm always looking for a bit more, even if it requires mods. I like the substantial look of wider tires, and here a 285 is no wider than stock. Also, because my LX470 100-series had 305 tires, it would be a step back.



I'm pretty set on no less than a 295. I do believe I"ll have to augment with a slight spacer. Only readily available choices are a 3mm slide on shim or 1-1/4" bolt on spacers. Ideally, I would like a 10mm spacer solution, though that is relatively custom with longer studs and such.

 

[Taco2Cruiser]

This gets at the crux of my question. I know rock warriors have the benefit of 10mm more clearance on the inside. (OE 20" is 60mm offset) and that 295/70r17 size almost exactly matches the dimensions of a 295/55r20. It may come down to the specifics of the tire. What specific tire were you running in 295/70r17?

I'm running a Cooper STT Pro. So you know it rubs the passenger side sway bar at full lock, but I'm at +3 degree caster on the passenger side, and have a bit of drift to that side so I can pull that tire back a bit. I might be able to clear with that. But again, the stock upper control arm and SPCs are the same dimensions and I think you are going to have issues with that.

Now I will say that the Toyo AT2 has much less sidewall protection, and that might the key you you getting those in there.

Don't know what tire store are available to you, but at discount tire, they mounted and let me drive around the parking lot and let me switch out tires till I was happy. Maybe a shop like that will let you test before you are committed.

 

[Ali FJ80]

This gets at the crux of my question. I know rock warriors have the benefit of 10mm more clearance on the inside. (OE 20" is 60mm offset) and that 295/70r17 size almost exactly matches the dimensions of a 295/55r20. It may come down to the specifics of the tire. What specific tire were you running in 295/70r17?

I am editing this as incorrect info was posted regarding LX wheels. My apologies.

on my wifes LX using Tundra 20s which are 60mm offset I put on 275/60/20 and have zero issues with rubbing etc.

 

[Willy beamin]

Go for the 295's if that what you want. Just bust out the dremel on the inner wheel liners. Trimming should be minimal.

 

[TeCKis300]

Just to make a clarification as I just noticed this when looking at the 20s my LX came with. They are not 60 mm offset, the LX wheels from 08-11 actually have an offset of 51mm which is basically the same as the rock warrior at 50mm.

That's actually really helpful and positive information! Good point on the 8.5" width, though that should only effect the sidewall contour rather than the tread width.
EDIT: 08-11 LX 20x8.5 verified to be 60mm offset, not 51mm.

I'm running a Cooper STT Pro. So you know it rubs the passenger side sway bar at full lock, but I'm at +3 degree caster on the passenger side, and have a bit of drift to that side so I can pull that tire back a bit. I might be able to clear with that. But again, the stock upper control arm and SPCs are the same dimensions and I think you are going to have issues with that.

Now I will say that the Toyo AT2 has much less sidewall protection, and that might the key you you getting those in there.

Don't know what tire store are available to you, but at discount tire, they mounted and let me drive around the parking lot and let me switch out tires till I was happy. Maybe a shop like that will let you test before you are committed.

Yes the Toyo's are less aggressive as an AT tire. The LX does not have KDSS so I wonder if the clearance issue there is better than the LC? I've used Discount Tires in the past and was thinking about using them for the same reasons.


Fortunately, I'm not new to stuffing big tires and modding the fender liners. Thanks for the added insight guys, and I hope to tackle this in the next couple months.

 

[TeCKis300]

Just to make a clarification as I just noticed this when looking at the 20s my LX came with. They are not 60 mm offset, the LX wheels from 08-11 actually have an offset of 51mm which is basically the same as the rock warrior at 50mm.

Which begs the questions what offset the later LX570 20" wheels have. So I went looking.

Supposedly, they are 20x8.5" 45mm offset (To be verified). So they would be more suited to wider tires again.

 

[Ali FJ80]

hm.. I am seeing all kinds of conflicting data online. I will physically check the stamp on the wheels when i get home and report back.

Edit: just checked and the offers is stamped 60. Not sure why it's all over the web at 51. My apologies will remove the incorrect info above.

 

[TeCKis300]

Appreciate the clarification. And yes, there does seem to be a lot of conflicting info. I'll correct my posts as well.

 

[tance]

Appreciate the clarification. And yes, there does seem to be a lot of conflicting info. I'll correct my posts as well.

Did you end up with those tires? I'm looking at going with 295/60/R20 tires with a 1" spacer and wondering how much extra trimming I'll need

 

[BossHogg760]

It’s just bananas you can’t find info on this or no one reports back lol. I guess I’ll be the guy to actually tell people for sure if this fits without modifying. Just ordered BFG KO3 in 295/55/20 to try on stock 2014 wheels.

 

[TeCKis300]

It’s just bananas you can’t find info on this or no one reports back lol. I guess I’ll be the guy to actually tell people for sure if this fits without modifying. Just ordered BFG KO3 in 295/55/20 to try on stock 2014 wheels.

Sorry this thread got lost in time.

A KO3 295/55R20 is a great size to go with. Specs at 32.8" x 12.2". Wish more LXs ran this size than running LC friendlier 275 widths.

This is very similar to a factory approved LT285/70R17 that specs 32.8 x 11.6", Rock Warrior wheel fitments.

Should be relatively easy to drop in. Key to this will be offset. Rock Warriors are +50 offset, where as your 2014 wheels are +60.

I would recommend a .75 or 1" wheel spacer. Check for the existence of lug pockets on your wheels so protruding lugs have clearance. 1.25" spacers could work too but it might be more of a compromise for scrub radius geometry and create tire clearances against the body mount and plastics.

 

[BossHogg760]

Sorry this thread got lost in time.

A KO3 295/55R20 is a great size to go with. Specs at 32.8" x 12.2". Wish more LXs ran this size than running LC friendlier 275 widths.

This is very similar to a factory approved LT285/70R17 that specs 32.8 x 11.6", Rock Warrior wheel fitments.

Should be relatively easy to drop in. Key to this will be offset. Rock Warriors are +50 offset, where as your 2014 wheels are +60.

I would recommend a .75 or 1" wheel spacer. Check for the existence of lug pockets on your wheels so protruding lugs have clearance. 1.25" spacers could work too but it might be more of a compromise for scrub radius geometry and create tire clearances against the body mount and plastics.

Thank you! I had also ordered 1.25” hub centric spacers just in case. I’ll post some pics and update probably on weekend!

 

[BossHogg760]

Crazy day of bad luck with deliveries and opened wheel spacers with striped studs then stripped wheel lock key lol.

295/55/20 KO3 does NOT clear control arm on front, the rear is fine. With 1.25 spaces the front clears and will just need a front mud flap removal or trim. Since 2 of my spacers were returned by some a-hole that striped the studs, I could only put the front on until new set arrives tomorrow I will do the rear I just to match offset.

Do you usually blue loctite the spacers on or no, I hear both ways. Discount Tire said no, but Spidertrax says yes and includes. I’m tending to say no because I will rotate tires often and check torque, not trying to run into a nightmare come brake rotor time.

 

[TeCKis300]

Crazy day of bad luck with deliveries and opened wheel spacers with striped studs then stripped wheel lock key lol.

295/55/20 KO3 does NOT clear control arm on front, the rear is fine. With 1.25 spaces the front clears and will just need a front mud flap removal or trim. Since 2 of my spacers were returned by some a-hole that striped the studs, I could only put the front on until new set arrives tomorrow I will do the rear I just to match offset.

Do you usually blue loctite the spacers on or no, I hear both ways. Discount Tire said no, but Spidertrax says yes and includes. I’m tending to say no because I will rotate tires often and check torque, not trying to run into a nightmare come brake rotor time.

View attachment 3838215

Good to see progress, even if it's not all the way there.

Yes, +60mm stock offset won't clear which is why spacers are needed. They also fix scrub radius geometry which is beneficial.

I would follow manufacturers (Spidertrax) guidance and use blue Loctite. It's an extra measure of safety that can only help. No problem at all untorquing blue when it comes time, and I've done it enough between switching up setups and changing rotors.

Looking forward to pics of the whole car.

 

[afgman786]

Locktite for the nuts and anti seize on the back of the spacer that is in contact with rotor