New Falken Wildpeak AT4W ????

That would be nice. But I'm basically down for anything that is narrower than 285, lol. A 265/80R16 or 265/85R16 would be even better

 

Gotcha, I run 285s on both my Tacoma and 4Runner. On my FJ40 I run 235/85/16 which is super narrow but looks era accurate.

 

Both very valid points, I contacted Falken tires and the following is their response:

"Hello,

thank you for the update. Lets break this down:

-the tacoma with the P265/65R17 supports

2149 lbs of load, per tire, at 29 PSI.

The LT315/70R17, a much bigger/oversize tire, can support this load with ease. However, I would like to point out some limitations with current data.

The tire industry relies on ETRTO inflation chart data to spec out their tires. For example, visit our link below and scroll down a bit, clicking on the tab box "load inflation"

https://www.falkentire.com/load-inflation

Scroll until you come across the LT sizes, starting from 15" down floatation sizes.

You'll notice that even at 35 PSI, the LT315/70R17 supports 2535 lbs of load, per tire. This is a substantial jump from the 2149 lbs on the factory tire. Unfortunately, industry data doesn't go below 35 PSI, which we would need to allow us to calculate the appropriate adjusted air pressure.

The main goal of a tire pressure adjustment is to get the same load capacity as the the factory tire or essentially match what the vehicle manufacturer states is the maximum capacity the vehicle carry at a specified tire air pressure.

With this unknown, we can't estimate what the adjusted pressure would be. However, you could always use the factory tire pressure of 29 and adjust from there."


After speaking to Falken and TW members I was advised to use the chalk test to get the proper tire pressure since the Falken chart starts at 35 psi. At 35psi I had a lot of tread not contacting the ground causing uneven wear, the rear was even worse since there is less weight back there. I would often spin the rear tires on acceleration most likely due to the partial tire contact and 5.29 gearing. After chalk test I settled on the pressures I'm currently running, the ride isn't harsh to the point where you can feel every crack in the road and no more spinning tires.

What @jaymac10 said is absolutely correct, admittedly I did buy the wrong tires. That's why in my original post I said when the AT4W hits the market I will be switching to the C load in the same 315/70R17 size, lesson learned. Until then I don't think being underinflated is an issue as long as the load per tire is still within factory specs as advised by Falken. I usually run 28-30psi however the recent change of weather has made it drop down to 25psi as it dropped to -15C/5F from 10C/50F.

@BLtheP I had the C load before switching to E load in the same size and 35psi does not feel the same with an E load. If you look under light truck tire load/inflation on the Falken chart 35psi is the MAXIMUM recommended for the C load whereas for the E load the maximum is 65psi so there is no reason to run the 35psi that you're suggesting because that would bring you up to 2535 load rating per tire when you only need to meet 2149 lbs (multiply that for 4 tires and you're over by 1544 lbs). You do not need to inflate to maximum pressure for C load as that would likely feel like you're riding on bricks regardless of suspension setup and your tread will probably not fully contact the ground depending how heavy you are.

Keep in mind E load is not designed for Tacomas they're more often found on full sizes so to inflate to that pressure needed for a full size truck you will probably have a negative experience. The factory load rating for Tacoma is within the inflation range for the C load, just not for the E load as they're overkill. I was going to buy the same AT3W size in C load next however I'm being told they are discontinued by Sumitomo Rubber (Falken) so waiting for the AT4W is my only choice unless I can find old stock.

EDIT: grammar/spelling

 

anyone run 255/85/16 on a 16x8? Going to need to replace my 265/75r16(already a heavy tire) ridge graps by the summertime and the tall skinny interests me.

I was thinking about going 285s but my truck only has a 1.5 lift in the front so I don't want to deal with rubbing issues. 16x8 -12 SCS wheels.

 

They did a decent job lining it out, however, there is just a bit more to it that they left out. P-metric and euro-metric (in other words, anything metric and not LT) has a 10% overage factored in that you remove when switching to LT-metric tires. so the load you are actually trying to match is 1953 lbs (2149/1.1).

They are correct that the load capacity for an LT-metric tire STARTS at 35 psi. Which is why it's "recommended" to put the tires there even if it's significantly higher in load capacity than your stock tire at that pressure. It's probably mostly CYA, because of there not being any official ratings below 35.

No, they definitely don't feel the same, that's for sure. If both are at 35 psi, the E will be considerably stiffer due to the sidewall. However, what I'm saying is that for a certain load, they both need the same pressure (until you reach the max load of the tire). For example, I've looked at LT265/70R17 C and E. When calculating their new pressure based off of stock pressure, both support the exact same load of 1964 lbs at 37 psi. The C or E doesn't change anything, both support the same load at that 37 psi, and the E will ride rougher. However, the C will max out it's load capacity at 50 psi on that size vs 80 psi on E (or 65 psi on D).

So this is where things get interesting and introduce things I've never seen before. You are absolutely right that an LT315/70R17 maxes out it's capacity at 35 psi. It also starts its capacity at 35 psi. So it is actually only officially rated for 35 psi:



I probably shouldn't have said you were way overinflated. Really what I meant is that you are significantly below the "recommended minimum pressure," which I think you already know. If you did run at 35 psi and had nothing but trouble, then I can see why you lowered it. I don't really understand why the industry doesn't rate them to lower than 35 psi. I guess they expect anyone running LT metrics to truly be using them in an HD environment and usually sticking to stock sizes where it naturally keeps the pressure above 35 psi naturally (for example not running 35's on a mid-size).

So the new tires will still have the odd 35 psi only rating, and you will still want to run them wherever you ran the current tires at for the same load (25 psi or 28-30 like you said), but it will be a softer ride for sure switching to C's. It's just unfortunate the industry makes it confusing by not rating them below 35 psi. And I learned something in that 315/70R17 also maxes out at 35 - that to me is just odd.

 

I'll be putting that size on a 7.5" +10 offset wheel. Replacing the same size Geolandar which currently does not rub (now that mud flaps are removed and part of the fender liner was heated and pushed out of the way.

You might have some rubbing with that low offset, in fact, I'd be surprised if you don't. But, it varies a lot from truck to truck, in large part due to specific alignment specs. Lift height is pretty irrelevant. Lift height only changes where in your suspension travel your rubbing occurs. It doesn't stop rubbing. What's most important in regard to rubbing are tire width, wheel offset and alignment.

 

Tires arrived today, they are in fact the new at4w’s. Wheels come next week, I’ll update when they are mounted!

 

@Bobweirisajedi a sigh of relief! That's fantastic that you got the correct tires. Now we have to go back to our resources and figure out why we are being given incorrect information. Congrats! Be prepared for the inquiries to begin. After installing them of course.

 

Can you throw one on a scale before mounting to verify the advertised weight?

 

My god, they’re real.

 

So you’re saying Falken made a 255/85/16 Wildpeak AT3W……!!!?

 

Could be the opposite side of the tire? Maybe one is raised letters and one is not?

 

That size in the AT4 has a different sidewall, called Duraspec. That could be why they are not protruded.

 

Holy crap, they are real!

 

58.4 lbs according to ye olde bathroom scale.

 

Also, the wildpeak and falken text are raised on the opposite side

 

Good to know Falken knows how to weigh their stuff, bummer to know it really is that heavy.

 

they're making pizza!?

 

More pictures for the non believers…