Tried out some 20" wheels today.

[AL427SBF]

Nonresponsive to the quoted assignment. In the mean time Superformance is on-board with 18's. The MKIII comes standard with 15's but if you are going to prove the performance capability of the car, better get those dealer installed options & upgrades:

- American Racing 18" pin drive wheels
- Custom Wilwood Big Brake Upgrade

Superformance 427 Cobra vs. Spyker C8
http://www.youtube.com/watch?v=0ngPGMQFtnM
Trick question RodKnock, why did Superformance run with their 18's that day?

Meanwhile back at the ranch some self-respecting Cobra owners chiming in on the 18's.
Superformance NEW 18' American Racing Rims!
Nitto's: Front 275/40 ZR18, Rear 335/30 ZR18

[RodKnock]

Originally Posted by AL427SBF

Nonresponsive to the quoted assignment. In the mean time Superformance is on-board with 18's. The MKIII comes standard with 15's but if you are going to prove the performance capability of the car, better get those dealer installed options & upgrades:

- American Racing 18" pin drive wheels
- Custom Wilwood Big Brake Upgrade

Superformance 427 Cobra vs. Spyker C8
H2H Ep13, 427 Cobra Vs. Spyker C8 - YouTube
Trick question RodKnock, why did Superformance run with their 18's that day?

Meanwhile back at the ranch some self-respecting Cobra owners chiming in on the 18's.
Superformance NEW 18' American Racing Rims!
Nitto's: Front 275/40 ZR18, Rear 335/30 ZR18

Cool. You dug up a 3 year old thread started by Hillbank, an SPF dealer.

Why did SPF run 18's in the video? Oh, I don't know. I'm just spitballin' here, but maybe, since the younger crowd really like big shiny wheels and SPF desires to sell more Cobras and make more profit, SPF installed the bigger wheels to expand their product's demographics (i.e., install big shiny wheels = more sales to kids)?

Two math equations for you to think about:

1. More aluminum + more rubber = More Weight

2. Authentic-appearing Cobra Replica Does Not Equal Modern Sports Car.

Again, big shiny wheels are discussed at length over on the C7 Corvette Forum. You may find a discussion about owners going from 20's to 22's or more

[vatdevil]

Originally Posted by RodKnock

Cool. You dug up a 3 year old thread started by Hillbank, an SPF dealer.

Why did SPF run 18's in the video? Oh, I don't know. I'm just spitballin' here, but maybe, since the younger crowd really like big shiny wheels and SPF desires to sell more Cobras and make more profit, SPF installed the bigger wheels to expand their product's demographics (i.e., install big shiny wheels = more sales to kids)?

Two math equations for you to think about:

1. More aluminum + more rubber = More Weight

2. Authentic-appearing Cobra Replica Does Not Equal Modern Sports Car.

Again, big shiny wheels are discussed at length over on the C7 Corvette Forum. You may find a discussion about owners going from 20's to 22's or more

Your are missing the point. Choices for high performance COMPETITIVE DOT street legal radials are almost nill for 15s. Yea, there are the ungodly priced Avons, but the new generation tires will easily outperform them too. There are some decent drags radials, but have fun with them on high speed cornering. Tires choices are driving the larger wheel size. Sure, unsprung weight matters some, but keeping all four wheels planted trumps unsprung weight in my opinion. My lap and autox times greatly improved when switching to 18s...not because of wheel diameter....but because I could run better tire compounds and much wider (285/335) tire widths.

[strictlypersonl]

Originally Posted by vatdevil

Your are missing the point. Choices for high performance COMPETITIVE DOT street legal radials are almost nill for 15s. Yea, there are the ungodly priced Avons, but the new generation tires will easily outperform them too. There are some decent drags radials, but have fun with them on high speed cornering. Tires choices are driving the larger wheel size. Sure, unsprung weight matters some, but keeping all four wheels planted trumps unsprung weight in my opinion. My lap and autox times greatly improved when switching to 18s...not because of wheel diameter....but because I could run better tire compounds and much wider (285/335) tire widths.

Looking through the choices in 335-35-17 tires, the prices are quite comparable to the Avon 15-inchers. Maybe they're both "ungodly".

[vatdevil]

Originally Posted by strictlypersonl

Looking through the choices in 335-35-17 tires, the prices are quite comparable to the Avon 15-inchers. Maybe they're both "ungodly".

Avon 295 50 R15 $470
Nitto NT01 315 35 R 17 $247
Yes, pricing is very close? I've run both, and NT01 produced better times with equal wear. (Track and Autox). Also run the NT01s on the street and wet weather. Too bad they arent made in proper 15 inch sizes. Moving up to 17 and 18 size, there are dozens of affordable high performance DOT RADIALS.