What tyre size?

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.

Yes, I ran the Toyo MT 35x12.5-18 previously… but it measured about 13.25" wide. A tight fit for sure and I didn't even have the caster in-spec. I thought the TOYO MT was a good "AT plus" tire and would consider another set.

If you want wider than the 285/75R18, I'd keep an eye out for more tires in the 305/70R18 size, which is a true 35+" tire, just 20mm wider. I only see Pro Comp, Mickey Thompson, Dick Cepek and Nitto Duragrapplers in this size but the list is growing.
 
I am still happy with the Michelin ltx a/t 2. We did a bunch of miles of washboard/gravel roads on the Labor day weekend and they did fine. Did some steep pulls with the pop-up over Kingston Summit and had plenty of traction in the loose stuff.
 
OK... Ok.... My head is spinning. I have spent the past two days reading through all the threads on what I need to do to fit 35's. I think I am set on buying the Toyo ATII in 285/75R18.

I currently have 10mm spacers on the wheels and timbren bump stops installed. I have a 1" body lift in the garage as well as a set of 18's. Besides the pinch weld needing to be modfied, what else am I missing/forgetting? Do I really need the body lift? There were some suggestions about adjusting the bumpstops with fender washers. Do I need to do that with the timbrens?

Trying to make sure I understand everything before I get into this. Thanks!

(damn Shotts ruined every discussion on the topic.
 
If you run high speed in the desert, then you will probably want a body lift. If it bothers you to hear an occasional rub, then you'll probably want a body lift.

I run that size without any body lift, simply because I can't fit the 100 in my garage if it is any taller. Most my off-road is at lower speeds and it hasn't been a problem. I've trimmed my fender liner and my washer reservoir from previous larger tires, so I don't know exactly what is the minimum needed. But the more caster you run, the higher likelihood of rubbing the plastic liner towards the firewall and less chance at the washer reservoir. I am also using a couple fender washers at the bumpstops.

The ATII will have better clearance than the MT tire as it doesn't have the larger sidewall lugs. The Toyo RT just came out in the same size and will likely be my next tire. I'm going to need new front fenders soon, I was thinking about having a body shop reshape the fender lip... 1-1.5" higher.
 
Jonathan, as you probably remember I started with 285/75R16 MT/R's. Then greed for getting on the slippery slope put me to 315/75R16 MT/R's. To aid all things chasing Chukar in Northern Nevada I decided I needed tire chains. And that led me to 285/75R18's to allow enough clearance in front without the need to unnecessarily increase the front track width ala wheel spacer adapters.

Then a couple high speed sessions in the dirt ripped the front plastic inner fender liners/skirts. That led to the 12mm body lift which solved most of the rubbing but not all. Along with adding Timbren bump stops front and rear (I started with one Timbren per lower control arm then went to 2 per arm...) I got the greed thing going again and opted to go to 1" body lift so I didn't need to sacrifice that extra 10mm of front suspension travel :D

All has been good with 99% rub free running with 285/75R18 Toyo ATII sans wheel spacers and 3.5-3.75º of caster. If I run wheel spacers in front then I get a little interference between the tire and plastic inner fender skirt and/or rear wheel well during medium to hard front suspension bottom out.

So now I'm thinking I'd like a little more air between my wheel and ground and entertaining per Les' 411: Cooper 305/70R18. And this should squarely put me back on the slippery slope I so dearly miss :D
 
Regarding front spacer shims/washers to limit up suspension travel: I did need to use a few washers to fine tune my compression stop apart of the Timbrens. I think its important, due to manufacturing tolerances, for those motivated to fully dial in their suspension to cycle the suspension with zero spring input...then adjust bump stops accordingly. Sorry I don't have this for you today...but will have next week once I get my iMac out of storage...the compression factor I found while testing the Timbrens.
 
Took me a bit to circle back here. So, I had installed the BL and 285/75R18 Toyo ATII. I did a 850 mile road trip after down in Baja for Thanksgiving: https://share.shutterfly.com/share/received/welcome.sfly?fid=51232fbf390ce5c4&sid=8IcOXLdq0bMfg

As I said, No issues on the trip. SDCruiser (Craig) went with us and he lost the lower shock mount nut on his drivers side (almost lost the bolt completely) and luckily I had a nut in my spares that fit. Then his PS side bolt came loose. Then he got a flat tire...

Everything for me ran great. I have very minor rubbing at the back of the wheel well. I havent trimed or bent the pinch weld yet. But plan to. I had my heater T fittings fail on my test drive after the body lift. So those were replaced same day. Only other issues I am having is excessive vibrations in the steering shaft. Same thing happened after I replaced the rack a while back. I plan to get in there this weekend and readjust that to resolve the vibes. My Slip Indicator alarm seems really sensitive as well. It was going off on turns that it didnt use to. It started with my old tires and I just wrote it off as time for new tires. But it is doing it with the new tires as well. I have to go a lot slower now in turns. I have another 90K service coming up. I will have the shop check into ti then.

I really like the Toyo's. But, I do feel they are a bit louder than my old BFG AT's were new.
 
Link not working for me. For the slip indicator issue, I'd check for dirty/faulty ABS sensors... or a frayed line to the sensor.
 
^ ditto what Les posted Jonathan: Photo link = Fail.
 
Nice photos...looks like a great place to spend quality time with friends, surf and fish :)
 
Speaking of tire sizes...

It won't be long and I will be in tire shopping mode once again. Ideally I'd like a little more width/flotation and Les previously mentioned 305/70R18. 12.50"x35"x18" is just too much tire for my needs...too wide and too heavy.

I've had 100% reliability amongst the, now, 4th set of Toyo AT/ATII but wanting a little more void for better on-trail performance. Cooper offers their Discoverer S/T MAXX in 305/70R18 and I almost pulled trigger a few months ago on a set but they were on 2-month national back order which scared me off.

Anyone have direct experience with this tire? Specifically I'm concerned about sidewall & carcass strength/puncture resistance...don't want to go down the Goodyear MT/R Kevlar path again ;)
 
Jon, looks like a great way to spend Thanksgiving!

Dan, I have no experience with the Discoverer ST Maxx but I found this video explaining their Armor-Tek3 carcass. It's like a hybrid of radial and bias sidewall, I guess.

 
Ok, taking one for the team :D

...back & forth on the Cooper S/T MAXX and S/T PRO but ended up ordering the S/T MAXX in 305/70R18. Got a little biz trip next week to medico then get them installed the following week. Will report back with pics too.
 
Appealing tire... it is also 2 lbs lighter than your Toyo ATII 285/75R18.... and cheaper too!

I went with a set of Toyo ATII's though... for it's quieter ride and and I'm guessing better wet traction. I'll put more aggressive tires on the 74 series.
 
^ I saw that when I was comparing the two tires. This makes them, factoring in the extra width of the 305, considerably lighter (effectively and related to carcass weight versus rubber block weight)...I hope they're not too light. Last thing I need is a return to the weak sidewall issue of the Goodyear MT/R Kevlar tires. :(
 
You must log in or register to reply here.

Share this page

Back
Top Bottom