help with meaty tires

Kevv_Si

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You could also hit up Vit - @VitViper ran 10's or 9's in his car. It was fast enough to get booted from the track for going too fast without a cage. I bet whatever his wheel/tire setup is would totally work for you also. If it's a street tire. I don't know the specifics of his build.
ill check that out then, and man you have been a tremendous help i appreciate that!
 

Kakedo

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16
Here's my setup. 17x9 +35 with 235/40 s.drives. Keep in mind each tire will be different when it comes to sizing. Even though it may say 215/45/17 both tires, one might look bigger or small than the other.
 

Kevv_Si

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Here's my setup. 17x9 +35 with 235/40 s.drives. Keep in mind each tire will be different when it comes to sizing. Even though it may say 215/45/17 both tires, one might look bigger or small than the other.
That looks good, any more pics?
 

Kakedo

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16
Unfortunately not. I don't usually take much pictures of my wheels since it's always dirty.
 

dpetro1

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Catonsville, MD
235/40/17 has a SMALLER overall diameter and shorter sidewall than the oem tire. This tire size does not fall into the "meaty" category IMO and I doubt you will have any increased traction using that tire size, especially in a straight line. A wide treadwidth does not necessarily mean more traction.

Since you are running a 9" wheel you will be limited in tire sizes that fit that wheel. You would be better off with a 17x8 with a 225/45/17 tire. Way more tire options in that size as well. Or better yet, as someone else mentioned, go to an even smaller rim with a tire that has more sidewall
 

Nix

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235/40 is absolutely a better size than 225/45. A wider contact patch with a shorter sidewall is way better than a tall narrower tire. The taller the sidewall the more reduction in torque there is. It requires more force to turn a taller tire than a shorter one.


If we are talking traction, why would you want more sidewall? If anything you want wider rubber. If running the same tire, a wider tire has more grip. Especially in a straight line. I cant tell if you're trolling or just confused. Smaller wheel and taller tire? Like a 16" with 205/55 tires?


Why would he be limited in tire sizes for a 9" wheel? There are lots of options that will fit that size wheel.
 

dpetro1

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Catonsville, MD
no not trolling at all. sorry if i gave that impression

i agree the 235/40/17 has the wider contact patch and likely better lateral grip. but in the end the overall total contact patch area of the two tires will be very similar. the weight of the car (load) and tire pressure determines contact patch area. the wider tire has a wide and short contact patch while the taller tire has a more narrow but long contact area. the contact patch area difference between 235/40 and 225/45 is only about 0.5 sq.in. http://bndtechsource.ucoz.com/index/tire_data_calculator/0-20 <--- really in depth tire calculator

i also agree that it is harder to turn the taller tire. this should help the OP though and that was my main point. it sounds like he has high horsepower and could benefit from needing the added force to turn the tire, it will act like a taller gear in the trans

as for my tall sidewall comment, i think i was more in the mindset of drag slicks. you will commonly see a small rim and lots of sidewall to improve traction on launch. you would not see a low profile drag tire as the stiff sidewall hurts straightline traction (of course is very good for handling/cornering) but again that did not seem to be the OPs goal.

i think webby is kind of on the same page, the OP asked about "meaty" which i associate with larger than stock and more sidewall. the 235/40/17 does not fit the bill as it is smaller than stock and has less sidewall. the OP is perfectly fine running that size and with a 9" rim almost needs to to avoid stretching the tire past mfgr specs.
 
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