PDA

View Full Version : Pros and cons of bigger tires?



Mrtmag
03-05-2016, 05:40 PM
The wheels I have are 17x7 and I'm debating between going with 205/45/17 or 215/40/17. The stock size is 205/40/17 but there aren't as many tire options in that size. So I'd love to know the pros and cons of going with bigger tires? Thanks Alex!

punkozuna
03-05-2016, 11:40 PM
Probably not much real world difference with those sizes as long as you don't have rubbing issues with the wider tires.The 205/45/17s are nominally .8" taller than stock(assuming my math is right) or about 3.5% taller. The 215/40/17s are about 1.3% taller. Your gearing will be slightly taller in either case. You will have a 3.5% or 1.3% speedometer error i.e. the speedo says 60mph, your actual speed will be either 62.1mph or 60.78mph depending on which tire you pick.You might have very slightly (as in unnoticeable) slower acceleration,very slightly better gas mileage and a slightly heavier feel to your steering with the 215s.

Mrtmag
03-05-2016, 11:43 PM
Probably not much real world difference with those sizes as long as you don't have rubbing issues with the wider tires.The 205/45/17s are nominally .8" taller than stock(assuming my math is right) or about 3.5% taller. The 215/40/17s are about 1.3% taller. Your gearing will be slightly taller in either case. You will have a 3.5% or 1.3% speedometer error i.e. the speedo says 60mph, your actual speed will be either 62.1mph or 60.78mph depending on which tire you pick.You might have very slightly (as in unnoticeable) slower acceleration,very slightly better gas mileage and a slightly heavier feel to your steering with the 215s.
Perfect thats the kind of answer I was looking for. Do you think I will have any issues with rubbing? Thats my main concern with bigger tires.

punkozuna
03-06-2016, 12:09 AM
No idea. Hopefully there are posts from people who've actually put wider tires on the car.

jguerdat
03-06-2016, 09:18 AM
It depends on what you're after. Having the car ride higher is rather counterintuitive - it's tall enough already. Then there's the power issue where you WILL lose acceleration due to a taller tire. You don't say if you have an Abarth, which comes with optional 17x7 wheels, or a standard 500 and you added the wheels. The Abarth would be preferable relative to that loss - not sure a standard 500 would be as happy.

You can get 215/40-17s that are .1" taller than stock which is what I have, with the Dunlop Direzza ZII Extreme Performance tires for autocrossing. 200 TW but not horrible treadwear. There are a few others, too, in the same performance category that don't raise the car.

Again, it depends on what you're after. If it's performance, that's easy. If just a change, what's specifically wrong with the existing selection?

Robert Nixon
03-06-2016, 04:39 PM
Other than the technical performance aspects and rubbing that have been pointed out, I'd look at Tire Rack and figure out if there is much price difference in those sizes! I know that at least with the Bridgestone Potenza 71Rs that there is 20-30 dollar price difference between the 215 and 205. I'm not a good enough driver to feel the difference, so I'm planning to buy whichever one of those is cheaper just to save myself some money for autocross...there are plenty of cheaper tires, but none that will perform like this particular model (regardless of size)

500iEnjoy
03-15-2016, 11:31 AM
I ordered 215/35/17.Yoko S Drives for my sport running abarth wheels.Saw 235's mounted on abarth wheels on a electric and owner said the didnt rub
..percentage wise only a .1 difference compared to my stock 16's. See what the mpg's say in the coming weeks!

https://www.tacomaworld.com/data/tirecalc/imagestats/195x45xR16-215x35xR17.png

(https://www.tacomaworld.com/tirecalc?tires=195-45r16-215-35r17)https://www.tacomaworld.com/data/tirecalc/imagestats/195x45xR16-215x40xR17.png
https://www.tacomaworld.com/data/tirecalc/imagestats/205x40xR17-215x40xR17.png (https://www.tacomaworld.com/tirecalc?tires=195-45r16-215-40r17)

Shawnb
03-15-2016, 12:18 PM
I have 215/40/17 on my abarth.

No issues.

Black thunder
04-10-2016, 02:50 PM
I had 215/40-17 on mine and took them off,the car felt bouncy and unstable at high speed,im back with 205/40-17 toyo proxes tr1 and the car is great again,this is more than big enough for a car of this size.