New Shoes - what rim and tire size would you get and why?

Thanks for the info, all of this really helps. So when you increase the tire diameter size, can the dealer (or anyone) adjust the speedometer so that it reads correctly?

And is there any noticeable loss in torque?

 

I don't think they can adjust it, though I think you could setup something like the ScanGuage to display the correct speed. I just wouldn't care lol.

 

Hypertech makes an inline calibrator. And I recommend ignoring the above post, not your speedo change. It's illegal to have an incorrect odo if you sell the truck and technically illegal to drive with an incorrect speedo. Although an authority can't easily prove the latter.

 

Definite loss of torque as diameter increases.

 

I have a gps that gives me an accurate speed. I think there is a device that can correct your speedometer, but I'm not too worried about it, in my case if I am traveling at 70 on the speedo, I know I'm at around 75 actual.
Almost any tire you buy will be heavier that stock, so yes you may notice a loss of touque. I have a manual transmisson and the gearing in my truck matches well with the ST Maxx 255s.
The 255s do ride different than stock, a little more "floaty" (for lack of a better term). I don't really drive fast or corner hard to begin with so it works for me. Plus the gain of roughly 1.5 inch ground to axle is very nice on trails.
Good luck with your tire search.

 

The dealer certainly can't/won't. Someone else has already mentioned the Hypertech unit. I suspect your speedo is off from the factory (most are), so you'll actually not be off the full % of the tire change.

Torque itself does not change with tires. That's an engine paramenter. What does happen is a change in effective gear ratio, which means, in this case, it will take a bit longer to get up in the RPM band that produces the torque (which is drivability related) you ask about. Some big tire boys chose to regear to compensate.

I went from 215 to 235 on my little 4cyl 5 lug. There was a bit of performance hit, but not as much as one might suspect. So I'd drive it a bit and see how it feels for your usage of the vehicle before making other plans.

My experience in futzing with various performance car mods over the years tells me 'one thing at a time', so you always know exactly what changed and it's impacts before taking the next step.

 

if its off by 2mph is it really worth trying to calibrate

 

It's off by 8% with 33s. That's significant.

 

Auto I assume? Unless you spend a time off-road and you require added ground clearance, I don't see any benefit to adding larger diameter tires if you want the practical answer. Replace with like size / load rating and keep on putting on the miles...

Final drive ratio is borderline already... no sense making life even more miserable with taller and heavier tires.

Unless you want to swap rear gears too.

 

We have 85mph speed limits here so an 8% difference amounts to 7mph! So if my speedometer says I'm going 85mpg and I'm actually going 92mph that's significant and enough to get a ticket for. TX DOT cops have a 5mph pardon policy but this puts us past that.

Auto = yes. Offroading and could use another inch of clearance without the expense of a lift = totally. Interesting about making life miserable though - I don't want to be miserable. Sounds like another vote for 265/70/16 then. Noted, thanks!

 

I think miserable might be an exaggeration but I suppose it also depends on how much larger the tires are and how badly you hate the performance of the truck.

If you flat out hate the trucks performance like some people on TW, then anything past stock won't make you feel any better. Otherwise, I think 255s wouldn't make too much of a difference. If your considering some skinnies, definetly check this threat out https://www.tacomaworld.com/threads/put-255-85-16s-on-stock-or-wheels-and-suspension.491079/ some good info on what others have experienced running that setup.

 

I'm planning on getting Toyo 255/85/16 open country M/T.
Why: Like that tire, extra height/clearance, no major mods to run them. Might have to remove mud flaps but think I would do that anyway.
I bought an extra set of rims, steel with stock backspacing, so I can swap back to my stock tires if I want to.
My plans are to get the new tires, see if I need to change or add spacers to my bump stops, have it aligned moving the front tires further forward. To see if I can run mud flaps for daily driving.
Next mode will be rock sliders then a lift ~2" in front and 2-3" in back. Still need to figure out what I want to do with the rear springs. AAL vs new springs. I know I need to do something so I can handle camping gear but I'm not sure if I want a shell, one of those flip tents or possibly a pop up camper.
For the cost, think I'll do the AAL or one of those add a three leaf things.
Defiantly going to start with the 33+ inch Toyo's.
Thinking of just going with the Bilstein 5100 for my first lift then once I figure out my setup going with something better/stronger.
My daily commute is almost 5 miles, total. And I go off road and camp a dozen or more times a year.
I do not drive fast, slow and easy, just taking in the scenery and like to camp on remote spots.

 

After I get my Toyos and adjust my bump stops my next purchase will be a portable air compressor

 

Got shoes! I decided I didn't want to push it too far and wanted to go for the 255/80R16 but apparently they don't make KO2s in that size. I went for just a small size up from my Offroad stock wheels - up from 265/70R16 to 265/75R16 and I'm glad I did. Tons of room around the rear wheels. No rubbing in front at full turn but check out these photos at *half turn*. That's where you're gonna see rub first on the front wheels! Right by the mud flap area. So with these 31.2" tires I'm seeing only half an inch clearance. I just can't imagine how one wouldn't have rub there with 32" or 33" tires. I don't think I'll be going any larger than 265/75R16 anytime soon...

 

I'm definitely moving to 255/85/16 once I find somebody to buy the stock tires or I wear them out.

I like tall/skinny on trucks. If I could get like a 235/90 or some shit to be 33" but even skinnier, I'd do it

 

255/85 FTW. less rolling resistance

 

Right! I just can't imagine how the 85s wouldn't rub though considering how tight my 75s are (as pictured). I wish they made 255 KO2's in more sizes!

 

yeah, probably have to get the heat gun out if you would have gone bigger. I had 255s on my GX and loved them. But that was with an OME heavy setup. I actually have the same tires on my truck as you! IMO they are the best size for a stock suspension TRD OR.

 

255/85/16 are confirmed to fit with no rubbing using stock TRD OR wheels

They do make KO2's in lots of sizes, but it's more that hardly anyone makes tires at 255/85/16 - I can only think of KM2's and ST MAXX

 

I would get the stock size. They just work. Unless you need the height, for aggressive off road, I would leave it. The truck is marvelous in stock trim.