4 cyl Tire options.

Hello, i was thinking about putting new tires and 22 inch rims. How much overall diameter can i go up to without messing with the speedometer or gas milage. I was thinkin 28" overall diameter at the most. Would it be okay? If so do you think i could pull off a 29" diamter. Thanks.

 

Look here

http://www.tacomaworld.com/forum/tirecalc.php

 

I checked out the calculator and for a 29 inch diamater on a stock 4 cyl i got these numbers. Do you think these increase will cause any problems other than a little less gas milage, also a do you think i'll be okay with a 10.3 inch width. with a 22x9.5 wheel.

 

Every radar check I've been thru shows my 5 lugger to be reading 3 to 4% too high already. Putting bigger tires on won't be as big of a change in speedo reading as your chart suggests.

 

Instead of reading 4% high it will read 4% low with the new tires.

 

What would the affects of the % increase or decrease be on the truck.

 

New Mex taco, what tires are u running now?

 

Thanks

 

ive went to from 245 to 265 and it rides more smoother and better i think. and a little faster in my opinion...

 

This is purely personal opinion but running a 22x9.5 is just plain stupid. Here are a couple of reasons:

Think about the extra mass you're adding times four. Each wheel/tire combo has a certain mass, the stock wheels range (except x-runner 18in rim 255/45/18) from 15-16 inches with tires from 215/70/15 to 245/75/16. I don't know the actual weight of all the combinations, conservatively let's call it 45-65 lbs for each wheel/tire. A quick look at tirerack for a whee/tire combo in your size average 80+ pounds.

So you're thinking big deal I'm only adding about 120 lbs to the vehicle why's that so important?

It's where you're adding the weight, at the corners of your suspension. Your suspension now has to combat the inertia all the extra mass you're placed upon it. Ride quality will suffer along with pre-mature wear on your suspension components.

Now the safety part, your brakes they to have to slow down all the extra weight you threw onto the wheel. The extra width of the tires may help, but overall your braking distances will go up.

A couple of suggestions, I wouldn't go with a wheel/tire combo past 18 inches. Upgrade your brakes, not necessarily a big brake kit but better pads, brake fluid, maybe higher quality rotors. The rear drums you can't do much about. Upgrade your shock/springs to higher quality components.

Sorry of the rant guys, I see to many guys go with these uber plus application combos without considering the negative effects it has on performance.

 

4cyl, those look like 70 vs 75, is that the case?

 

30's will work. they wont mess with your speedo but they will rub a little bit -_-

 

i have 16x8 rims and 265/70/16 tires with no rubbing at all...and the speedo is right on.....these are close to the same size as 31" tires

 

Its not the height i have to watch, its the width since I'm lookin at 265/35/22. But kilgoja you have a 6 lug tacoma. The 6 lugs have stock 30" tires and can go way wide before rubbing. I have a 5 lug. The 5 lugs stock tires are 27" overall and 8.5" width. I had my friend hold the steering wheels turned all the way to one side and while I checked the clearence from the sway bars. Its about 2.5" and if i get the 265/35/22 tires it looks as if i would barley clear it. Another guy on forum put 255's on the same truck as mine he said he got a tiny bit rub. The 255' are 10 " wide and the 265's are 10.4. From what i measured it looks as if i have just enough room.

 

just to be clear ... is your truck a 5 lugger 4 cylinder and not raised ?? and the 265/70/16 does not rub ? interesting ...

 

He is a 6 lug, so the 265/70/16 is actually just a stock size.

I think the largest you can go with no lift on a 5 lug is 235/75/15

 

this is also from may 2009, just a heads up if you do not hear back from the OP