Piotrekzzz

I am moving from 550whp/660Nm to 700+hp/800Nm in a turbocharged C5. Already with 550/660 it lacked a bit of traction. Now the problem can be only bigger.
Do you have any experience with replacing stock rear tires/wheels with wider ones? eg. these from C6 Z06 325/30/19.
As it is a street car the wheels cannot stick out from the fenders and I wouldn't like to change the diameter of the wheels.
Would appreciate any advice.

StealthFRC

i have wide fenders with hoosier drag radials 325/50/15
car puts down 730/645 and i can dead hook 1st gear..

mdaniel

OEM wheels with Nitto drag radials.

Piotrekzzz

What size do you have? Do they fit under the fenders?

mdaniel

245/45/17 - Front
285/40/18 - Rear
They fit fine.

Piotrekzzz

Good. The wheels you have are 9.5'?
I am wandering whether wider tires would fit? 305s, or 325/30/19 from C6 Z06.

neutron82

I have 305/35/19 nitto nt05r's on my ccw's and they work really well... mt et street 2's and toyo r888's are a couple more you may consider for the street... with the 35 profile they are pretty tall and my driver side tire wore a small hole in the fender liner, it just depends on how low your car is... stock ride height probably wouldn't be a problem

95vettski

With stock wheel sizes, MT 305/30 18 drag radials.
With a mini tub or fender flares same tire in 345.

C52K3

I'm not making 700+hp but I put down 656whp 592wtq and hook fine in second gear and up with mt et streets 305/35-18 on stock c5z wheels

Yellow03Z06

I've tried Nittos and MT's. Right now I'm running Toyo R888 305/35/18 on stock Z06 wheels. I feel they are the best all round tire for street/strip use.

Y2KRoadster

What kind of power are you making?


OP,

If you are going to be at that power level, Nittos will spin on the street...unless you have a wide rear tire and can put a 345 on the back. I'd drop to a 17 in the back and put an ET Street on it. There is no comparison between a Nitto and ET Street...the ET street is twice as sticky. I have about 850whp...

PEETYZ

IMO

Street strip- Toyo R888
Mainly drags and straight pulls on street-Micky ET or Nitto NT05R


Alpha GTR buddy of mine got some M&H race master drag radials that are supposedly pretty damn good and work better or a less prepped surface than a Micky but not quite as good as Micky on full race prepped track. Test n tune stuff usually is not prepped the best anyway.

Anyone here ever used them? His are 325/40/18 lots of sidewall

PEETYZ

Id love to try this. What are you running up front?

Think there would be any issues with a stock 265 up front and the 305/35/18 on rear for street kill mode?

neutron82

I'm making 720ish rwhp... I had r888's and at 420rwhp they would spin first gear, the nittos hook up first until around 5k rpm and will break loose if you don't back off the throttle but once I hit 2nd they hook from then on... I haven't driven them in the rain but have driven a few times on damp roads and they were fine... I'm more than pleased with them in my experience... it was a toss up between the nt05r and mt et street 2 in the size I have, I knew the mt may hook a little better but might sacrifice more in the handling dept on the street... when the nt05r's are done I may try a set of mt's

Chrisrokc

Drag radials will fix your traction issues, but from what I find it is a trade off.

Move Traction = Stickier Rubber = Shorter Tire Life

I am running 305 wide NT05r's. I can dead hook 2nd gear at 60mph.

Y2KRoadster

It is true, you will sacrifice in the handling department if you want to hook up in the straight line. The best combination for both, IMHO, would be to install the fender flares and more to a wider wheel (13) that can accommodate a 345 wide tire. Then you could run a Hoosier R6, Michelin Pilot Sport Cup, or even a Nitto. I know a lot of guys over on the Viper Alley are running the R6 and it holds good for 700 and up HP. You would have good traction and handling.

neutron82

I do plan on the rear flares but I just haven't been able to make the plunge yet lol

new tpe flares plus paint ~ $1400
new rear set of ccw's ~ $1500
new rear tires ~ $700

so I'm looking at 3k plus for the setup, I could probably recoup half of it by selling my rear wheels and tires

minitech

Minitub and 345s

Piotrekzzz

So if I got you correctly, 305/35/18 fits under the stock fender. 345 do not and I would need wider fenders or fender flares. Correct?
Anybody tried 325?

dblack

I've got 325/30/19 Invos under stock fenders... They don't come close to hooking, but they fit well.