victors yes lol but the v12's were factory fresh! i was new! who knew.. sue me so., we have met! lol. i'm all about the canyons of northern la cty. in fact i'm kind of like a guide up here. in keeping with a grand tradition ( really ) ..if i'm down there, i'll give you heads up. you pick the pkg lot and the time

 

Awesome, I was thinking LA was Lousiana. I just was up in Valencia yesterday for business, got lucky with the traffic. I'll give you a shout 4 sure. You ever go to Irvine C7C, thats a big parking lot to oogle 22" dubs... lols

 

Nice upgrade, looks great! Which finish did you go with? Is that the brushed silver, or???

 

please let me hear this math.

This is "Kaizu" from Renntracks excellent take on the matter.


"For rear most people choose 12" with their aftermarket wheels just like in the GT2 but I perhaps would think this twice. The 12" rear wheel needs a huge tire, 315 is the minimum and actually you see many great tires (the late 315 MPSC, the 315 PZero Corsa and the 315 Toyo R888) are designed for max. 11"-11.5" wheels. So in theory at least you should not use huge 12" rears with those popular 315/30/18 tires at all, even though in practice they might work...Anyway that is the reason why I continue to recommend the stock width of 11" for most. With 11" rears you can drive 295s which are easier and cheaper to purchase, but you also can upgrade to wide 315s without a problem."

The thread is called
"Proper wheel offsets and wheel widths revealed for the 996 Turbo"



Lots of great info from a bunch of track-oriented folks. Speaking of which, are you doing any POC events at willow this season? b/c you know Canyon driving is still STREET driving

 

I made the switch to 19's in December. The car looks so much better it's night and day. Performance wise, there is a loss in acceleration. As far as cornering goes, it's tough to tell b/c I had Sumitomo's on it with the 18's and they aren't exactly the best tire.

The ride is pretty much the same. (I am on 305's)

 

How much HP to do you have? What ind of tire are you running?

I have ~600 and a LWFW and decrease in acceleration is imperceptible on my end.

 

Looks great with the forgestars

 

I suspect that switching from stock 18" wheels to 19" forgestars (or a more expensive forged wheel) will be a net zero change in acceleration. If you throw some TechArt Formulas or OZ Racing wheels you'd be done.

As a note, I ordered 11" rears also just in case.

I spent a long time debating silver vs brushed and decided to pass on the bling.

 

I'm enjoying my setup of 245/35/19 ~ 305/30/19's and have no regrets!

 

yes! it is street drving, but that's where the similarity ends 85mph canyons are a blast and not to be hankooked lol. ... anytime youre in valencia, lets do a downhill pch canyon run...

 

It's simple science, the price of the wheels or the HP are irrelevant. When you move that outter "barrel" outward you move rotating mass outward which increases resistance. When you increase the outter diameter of the tire you change gearing. The cost of the wheel won't help, neither will additional horsepower, the science behind it remains. 315's would have minimized the effect, but then the car would ride like crap.

 

I currently have Nitto Invo 305/30/19 rears and 235/35/19 fronts. I am looking at changing changing out the fronts to 245/40/19, as this puts the fronts slightly taller than the rears. Keeping the fronts slightly taller is apparently important in not only saving the viscous coupling and differential but also in the proper operation of the AWD system.
https://www.6speedonline.com/forums/...ire-se-up.html

According to Nitto website the fronts would be 26.73" and 777 revolutions per mile, while the rears would be 26.22"/ 792 revolutions per mile. About 2% difference in size. Which I think is okay.....

To be honest the more that I try to figure out what the right answer is, the more confused I get. https://www.6speedonline.com/forums/...s/confused.gif

I see that you are using 245/35/19s in the front, but the 245/40/19s are almost an inch taller (based on the Nitto website), does anyone run the 245/40/19s without an issue?

 

Intrigued that you think the 19s ride smoother - the 18 would have more sidewall which should make for a nicer ride. I wonder if the Sumitomos are just a very harsh tire to begin with. Car does look great though.

 

19s definitely seem more common. I have been looking at wheels but most of the ones I like don't come in 18s.

I'm sticking to the plan and looking for 18s though; I want something light since this car is mainly used for canyon driving.

All that said, the 19" F14s look great!

 

The V12s have a pretty soft sidewall; not ideal for hard cornering but they do ride really nice. I had them on my BMW and GTI. I recently switched to BFG sport Comp II; they offer a stiffer sidewall.