tire stretching and autoXing - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

KwKouki · 05-18-2006, 12:05 AM

My new car might be 5 lug. I am already looking into new grip tires. I am VERY pleased with the rt615s. I am reading around that the widest 615 is a 215/45/16. I will be using a set of Starion wheels for autoX *16x7 front 16x9 rear*

I really dont fully understand tire stretching. I mostly know people do it for clearance. Will I suffer any performance loss when grip driving on a stretched tire.

Pank · 05-18-2006, 12:08 AM

well, yeah, since you could be running wider tires, which in turn gives more lateral grip. A correct width tire, with the correct PSI for the type of driving you plan to do will handle better than a stretched tire. I dont believe the sidewall stiffness difference is THAT drastic. but hey, i could be wrong.

(mild MILD stretch here)

95zilvia · 05-18-2006, 12:18 AM

Put 295s on it.

KwKouki · 05-18-2006, 12:21 AM

Im only asking because I REALLY dont want to switch tires. The 615s feel the best for my clubs events. I could run Advan A048s in 225 trim. Even then I think that might be too narrow.

Pank · 05-18-2006, 12:26 AM

well....dont stretch tires, then. i'd be more worried about the 2 inch stagger promoting understeer. why not get 7's all around if you want to stay with the 215?

KwKouki · 05-18-2006, 12:27 AM

Quote:

Originally Posted by 95zilvia

Put 295s on it.

wanna be my tire sponsor?

KwKouki · 05-18-2006, 12:29 AM

grrrr I REALLY didnt want to get another set of wheels. Oh well, ill find a set of stockers and run those into the ground.

05-18-2006, 12:05 AM	#1
KwKouki Nissanaholic! Join Date: Apr 2003 Location: Key West, FL Age: 44 Posts: 2,212 Trader Rating: (6) Feedback Score: 6 reviews	tire stretching and autoXing My new car might be 5 lug. I am already looking into new grip tires. I am VERY pleased with the rt615s. I am reading around that the widest 615 is a 215/45/16. I will be using a set of Starion wheels for autoX 16x7 front 16x9 rear I really dont fully understand tire stretching. I mostly know people do it for clearance. Will I suffer any performance loss when grip driving on a stretched tire. __________________

05-18-2006, 12:08 AM	#2
Pank Post Whore! Join Date: Oct 2004 Location: Charlotte, NC Age: 42 Posts: 3,627 Trader Rating: (0) Feedback Score: 0 reviews	well, yeah, since you could be running wider tires, which in turn gives more lateral grip. A correct width tire, with the correct PSI for the type of driving you plan to do will handle better than a stretched tire. I dont believe the sidewall stiffness difference is THAT drastic. but hey, i could be wrong. (mild MILD stretch here) __________________ high performance driveway photography zenki s14---v8 fc rx7 my crappy flickr page (drift cars whoo)

05-18-2006, 12:21 AM	#4
KwKouki Nissanaholic! Join Date: Apr 2003 Location: Key West, FL Age: 44 Posts: 2,212 Trader Rating: (6) Feedback Score: 6 reviews	Im only asking because I REALLY dont want to switch tires. The 615s feel the best for my clubs events. I could run Advan A048s in 225 trim. Even then I think that might be too narrow. __________________

05-18-2006, 12:26 AM	#5
Pank Post Whore! Join Date: Oct 2004 Location: Charlotte, NC Age: 42 Posts: 3,627 Trader Rating: (0) Feedback Score: 0 reviews	well....dont stretch tires, then. i'd be more worried about the 2 inch stagger promoting understeer. why not get 7's all around if you want to stay with the 215? __________________ high performance driveway photography zenki s14---v8 fc rx7 my crappy flickr page (drift cars whoo)

05-18-2006, 12:29 AM	#7
KwKouki Nissanaholic! Join Date: Apr 2003 Location: Key West, FL Age: 44 Posts: 2,212 Trader Rating: (6) Feedback Score: 6 reviews	grrrr I REALLY didnt want to get another set of wheels. Oh well, ill find a set of stockers and run those into the ground. __________________

05-18-2006, 12:18 AM	#3
95zilvia Nissanaholic! Join Date: Jun 2003 Location: South San Francisco Age: 40 Posts: 1,860 Trader Rating: (0) Rides Gallery: 95zilvia Feedback Score: 0 reviews	Put 295s on it.