285/60/20 (1 Viewer)

[desertwampa]

Was thinking about putting on 285/70/17s on my 2008 Lx570..however the whole endeavor with new wheels ad tires is very expensive. Since this isn't going to be my main offroad rig, I thought about just keeping the stock rims and putting on 285/60/20s (Wildpeak AT3)

What is your experience with fit and for with these tires?
What do you think about airing down on 20" wheels...seems like these tires might have enough sidewall to get me anywhere outside of rock crawling..?
Pics?
Any info appreciated here, tia!

 

[Heckraiser]

No personal experience with that size, but I'm sure fitment is fine. It's basically a 33.5" tire. Might need to mess with the front mudflaps or front splash guards a little, but should be pretty minor. I've run 285/75/18 (35x11) for the last couple years with no trouble after some minor plastic alterations (and bending back the mudflap bracket).

I personally wouldn't air a 20" tire down below 20psi due to the shorter sidewall and higher risk of pinch flat or wheel damage. But should be fine for general trail riding. And I haven't done much wheeling on 20's, so I'll let others chime in.

 

[Everlong]

Perfect timing. Looking at same size right now!

 

[bigezvol]

Running them now. Here's pictures. I do run 1in Bora spacers. Also run the equivalent on my wife's 460. Love the tire wouldn't go with anything else.

The LX and GX are strictly over landing and camping rigs. My 80 is my rock crawler.

 

[Everlong]

Running them now. Here's pictures. I do run 1in Bora spacers. Also run the equivalent on my wife's 460. Love the tire wouldn't go with anything else.

The LX and GX are strictly over landing and camping rigs. My 80 is my rock crawler.

View attachment 3435882

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Do you know if the tires will run without spacers?

 

[bigezvol]

Do you know if the tires will run without spacers?

They will run fine. They just rub a little more full lock on the driver side. Just have to do a little more trimming on the plastic.

 

[Everlong]

They will run fine. They just rub a little more full lock on the driver side. Just have to do a little more trimming on the plastic.

Im assuming your truck in the pictures is in N height?

 

[bigezvol]

Im assuming your truck in the pictures is in N height?

Yes. And full sensor lift in front. None in rear.

 

[TeCKis300]

That's a fine tire size. No worries to airing down with that size on 20s. It'll be far more capable than many will give it credit for, "because 20s". While maintaining a better balance for handling and stability on road where it'll likely spend 98% of its time anyways.

 

[coleAK]

I wouldn’t do 20’s if off roading for you is more than a gravel road. Every fall during hunting season I see multiple trucks on 20’s with pinch flats. It only takes one rock. If you are doing the level of offering that you need an AT tire and then 20 inch rims will be a huge liability

Yes, it is expensive to do tires and rims at the same time but if you do tires on 20s now and regret it, you’ll be buying tires and then tires and rims

Most places 18 inch tundra takeoffs can be found cheap

The whole, bigger rims equal more stability is an urban myth precipitated by the fast and furious. Increasing rotational mass decreases acceleration, increases, stopping distance, decreases, suspension compliance,…

 

[bigezvol]

I wouldn’t do 20’s if off roading for you is more than a gravel road. Every fall during hunting season I see multiple trucks on 20’s with pinch flats. It only takes one rock. If you are doing the level of offering that you need an AT tire and then 20 inch rims will be a huge liability

Yes, it is expensive to do tires and rims at the same time but if you do tires on 20s now and regret it, you’ll be buying tires and then tires and rims

Most places 18 inch tundra takeoffs can be found cheap

The whole, bigger rims equal more stability is an urban myth precipitated by the fast and furious. Increasing rotational mass decreases acceleration, increases, stopping distance, decreases, suspension compliance,…

I would tend to agree with you if running stock tires on 20-in rims. But when you move up to a 35 on 20s. You're getting a lot more sidewall.

 

[krice118]

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I wouldn’t do 20’s if off roading for you is more than a gravel road. Every fall during hunting season I see multiple trucks on 20’s with pinch flats. It only takes one rock. If you are doing the level of offering that you need an AT tire and then 20 inch rims will be a huge liability

Yes, it is expensive to do tires and rims at the same time but if you do tires on 20s now and regret it, you’ll be buying tires and then tires and rims

Most places 18 inch tundra takeoffs can be found cheap

The whole, bigger rims equal more stability is an urban myth precipitated by the fast and furious. Increasing rotational mass decreases acceleration, increases, stopping distance, decreases, suspension compliance,…

My 35 off-road tires on my 20s are very different than stock tires on 20s. This is not a very informative Blakent stmt on 20s…..

When I went from 16s to 18s on my 100 (plus taller tires on 18s) I had a noticeable difference in stability.

 

[TeCKis300]

I wouldn’t do 20’s if off roading for you is more than a gravel road. Every fall during hunting season I see multiple trucks on 20’s with pinch flats. It only takes one rock. If you are doing the level of offering that you need an AT tire and then 20 inch rims will be a huge liability

Yes, it is expensive to do tires and rims at the same time but if you do tires on 20s now and regret it, you’ll be buying tires and then tires and rims

Most places 18 inch tundra takeoffs can be found cheap

The whole, bigger rims equal more stability is an urban myth precipitated by the fast and furious. Increasing rotational mass decreases acceleration, increases, stopping distance, decreases, suspension compliance,…

Good points yet this is not a black and white, and more a degree of. I'm sure even as you try to make a point, it's intuitively obvious a structurally larger wider wheel will make for more stability. Especially with a large 34"+ tire.

For a 31-33 tire, I'd lean towards an 18" too.

 

[coleAK]

I would tend to agree with you if running stock tires on 20-in rims. But when you move up to a 35 on 20s. You're getting a lot more sidewall.

I agree if we’re talking running 35s and larger on a 20. But where are the original post is talking about cost barrier of doing rims and tires didn’t think bringing up large tires, and everything that would entail.

 

[lx200inAR]

Dont forget to factor the cost difference of big 20” AT tires vs big 17” AT tires. It’s almost always about $100/tire. Unless you are getting a great deal on the 20s, in the long run (2 to 3 sets of tires) it might actually be cheaper to do 17” wheels of your choosing.

 

[coleAK]

My 35 off-road tires on my 20s are very different than stock tires on 20s. This is not a very informative Blakent stmt on 20s…..

When I went from 16s to 18s on my 100 (plus taller tires on 18s) I had a noticeable difference in stability.

Best performance (now likely not noticeable much time) on and off road is to run the smallest rims that will fit over the brakes. Running larger rims than that is approaching, never a performance advantage. Now does it matter in the real world the vast majority of the time no.

Heck, even with formula 1 the car is got slower in every performance metric when they switched to 18 inch rims to give the cars a more modern look.

 

[TeCKis300]

Best performance (now likely not noticeable much time) on and off road is to run the smallest rims that will fit over the brakes. Running larger rims than that is approaching, never a performance advantage. Now does it matter in the real world the vast majority of the time no.

Heck, even with formula 1 the car is got slower in every performance metric when they switched to 18 inch rims to give the cars a more modern look.

There's multiple trades and many do favor smaller wheels. To your point, there's additional advantages to moment of inertia, rolling resistance, etc, on top of those advantages already identified. I absolutely agree and there's no argument to those facts. An 18" can make sense for many.

IIRC, you've had Porches. Consider:

2021 GT3: F 9" x 20" - 52, R 12" x 20" x 44​

2021 GT3 RS: F 9.5" x 20" - 50, R 12.5" x 21" x 48​

The faster more extreme version steps up to a larger wheel. An extreme but it is the same fundamentals. What can't be dismissed is handling and stability advantages which shouldn't be conflated and aren't negated with the pros of smaller wheels you point out. As others have attested, many times over on these boards, the additional compliance with more sidewall. Most times preferred. But just as many times results in surprise. Does it make a difference day to day, perhaps subjective and depends on driving style, but there absolutely is a difference. Especially with really large tires. In my use, I prefer 20s with 35", for the way I use the vehicle. I drive fast on mountain roads, tow heavy, and definitely still want it to play hard in the dirt.

Back to the point of this thread - will 20s and a large 34" tires air down and play well in the dirt - heck yes. And it'll do it with confidence and performance. More importantly, it will retain some measure of better stability and handling where the vehicle is 98% of the time.

 

[Heckraiser]

Dont forget to factor the cost difference of big 20” AT tires vs big 17” AT tires. It’s almost always about $100/tire. Unless you are getting a great deal on the 20s, in the long run (2 to 3 sets of tires) it might actually be cheaper to do 17” wheels of your choosing.

This is where the mental gymnastics really come in. 17" tires are cheap, 18" tires are expensive, 20" tires are somewhere in the middle usually, but more on the expensive side. HOWEVER, 17" wheels that fit a 200 are not cheap or easy to come by, but 18" wheels are plentiful and cheap as takeoffs. And of course you've already got the 20's, so they're free.

In the long run (i.e. through multiple sets of tires) 17 wheels are worth the investment to save on tires (figure $400 savings per new set) - also a lot more size/load rating selections. It's hard to find a D or C rated 18" tire. For me personally, I drive the minivan less than 5k miles a year, so whatever tires I buy are basically going to stay on until they dry rot or I decide to change to a different size.

In the end, 17's just look better (IMO) so that's what I got, practical or not!

 

[Everlong]

Was thinking about putting on 285/70/17s on my 2008 Lx570..however the whole endeavor with new wheels ad tires is very expensive. Since this isn't going to be my main offroad rig, I thought about just keeping the stock rims and putting on 285/60/20s (Wildpeak AT3)

What is your experience with fit and for with these tires?
What do you think about airing down on 20" wheels...seems like these tires might have enough sidewall to get me anywhere outside of rock crawling..?
Pics?
Any info appreciated here, tia!

Did you endup getting these tires???? Pics?

 

[desertwampa]

Did you endup getting these tires???? Pics?

I went with the 285s