Largest tire diameter for stock 14" rims?

[floraver]

On the 2011 Aveo hatchback, I was wondering what would be the biggest diameter tire I could put on the stock rims?

Right now, it has 185 60r14 tires, and I understand from past threads that a 195 60r14 might fit...those are 23.2" diameter. Any thoughts are appreciated! Thanks.

[petrified.rabbit]

do you want width with the height, or do you want less width for fuel economy/

[floraver]

I can see from your reply that I obviously have some homework to do...never thought that through...I would say less width for fuel economy.

I think our hatchback would look better with 15", or 16" rims, but a slightly larger diameter tire on the 14" rims might also work...but fuel economy is important.

[gclark8]

I thought the same, however when I checked the gearing, top gear is an overdrive. I doubt you will ever reach red line in top gear! The car is already overgeared so I decided to leave wheels original and reduce the drag as a better option.

You can try shifting at a lower rpm and inflating the front tyres to 38psi.

These pages give gearing and speed in gears. 2011 Holden Barina TK Hatch Phase-II specifications & performance characteristics

[Shibbs]

I put a 205/45/16 wheel/tire combo on my car and fuel economy went up.

Went with a wider tire so I don't have to slow down for corners.

I'm joking, btw.

[thehunterooo]

Brand wise I would get some Mashimoto ZX tires.

[petrified.rabbit]

weight is almost as important as diameter. but a few good points have been made about gearing etc. you have to watch/mathematically know the difference in diameter as it reflects your numbers in the car.. if you have a 5% increase in speed due to tires size, your car will say it went 300 miles when you actually travelled 315, in @ a 10 gallon tank that is almost 1.5 mpg that is not on the direct numbers.

however your engine might see improvement working less going to a 15lb wheel in the same size, with a lighter or lower friction tire (this is not performance oriented). or do both and really try to increase your mileage.

or do both

[exodus0784]

As far as overall diameter goes: I'm running a 185/65/14 right now on my RX car, They're around .2" taller than a 195/60/14, and at stock height you shouldn't rub. The only time I rub is on a full lock corner, and my front sway bar is disconnected.

[northguest47]

I am still running my winter 185/70/14 tires as they are fun in the dirt. They fit fine on my '06. They definitely don't have great cornering traction but its good enough for me considering the stock body roll can spill anyones coffee, and launch my dog from side to side in the back. I haven't managed to rub these tires on the car yet, but as exodus0784 mentions if you do a full lock corner where the car is basically on three wheels you'll probably hear something lol. But winter rubber aside, I am pretty convinced that high mileage rubber 185/70/14 tires should show significant increases in mileage at cruising speeds of 45-65mph, as the rpm are in the 3K range for the 5spd, air drag isn't huge, and lowering the rpm doesn't seem to bog the motor. This is one of the setups I am thinking of running this year on lightweight rims to test it out.

[daug1502]

I like my 195/60/14's for not being pulled into every nook in the road. I plan on going 205/40-45/16 in the future for summer tread, I will run 185/195/60/14 in the winter on the stock rims. Whatever gives me better traction on the snowy roads. I also plan on lowering my car with some H&R's.