taller tires more MPG ??

I have a 2wd 4 cyl 2.4 L reg. cab. I need to buy new tires and I was thinking if I get a little taller tire I should get better mpg. That’s the same as putting in taller gears right?? I have the stock size tires on now p195/75r14. Has anyone ever played around with this. How tall can I go before tires rub?? I don't care if I get some power lost I don't tow with it and haul very liitle, I have a large truck for that kind of stuff. How would I adjust the speed-O ?
I also need some suggestions on brand/model of tire. I having a hard time finding a tire with a good truck like tread for traction with 14"wheels. All I can find is passenger car tires. This truck is bad on traction I need all I can get.

Thanks

 

Taller tire = more weight = less mpg

 

At first it seems that easy. taller tires better gas mpg. Problem weight of tires, trying accelerate to same as the smaller tires, drag on tires"most taller are going to be wider which both more tire on road and trying to cut threw the air.
With that said I play the mileage game all time.Driving style will have to change
It can be done. You will not see gains in mpg that match percent of tire size difference.
Have not done this on my tacoma yet.
But just up sized on my 07 Charger now 34 to 36 highway mpg

 

Well then, I'll stick with stock size. And try to control the lead foot

 

When taller tires are put on is the speedometer gearing changed to read correctly?

 

No you do it electronically, not with gears like an old Jeep.

 

Oh, OK. I'm old school and didn't know. Thanks.

 

You might get better mpg with a taller tire but dont count on it . If you go taller, make sure the tread width stays the same , keep the tire as an all season or highway tread (= low traction), and consider the tires pressure rating...some load range C can go to 50psi or so.
You mention the lack of traction too , i dont think youll be able to go taller with better traction AND get better mpg , the added weight also effects rotional mass , the better traction tire will lose mpg. My opinion is to get 15" rims (decent used ones perhaps) and try a tire around 205/75 r15 , the reason is it wont be much wider , the added rim diameter gets you a 1" taller tire ,and more options for tires for that rim. tire model, go through Tire Racks list of tires and their sizes look for BFG all terrain for good offroad or rugged trail as a lighter AT for road use and some light offroad. Bridgestone has good models too , many many choices.

 

The theory is correct but it depends on the vehicle. You'll see MPG gains by going to a taller tire on a vehicle that has more than enough cruising power but is reving too high at the desired cruising speed with the original set-up. In that case, adding a taller tire = lower engine speed = better MPG. I could be wrong but I doubt that applies to the 4-cyl Tacoma. Taller tires means you need more power to get them rolling and keep them rolling. The more stress you put on the engine, the worse your gas mileage is going to be. You have to find that happy compromise and, of course, driving style plays a huge roll also.

good luck!