I currently have a set of IMPUL RS Wheels 9.5J-19+30 I want to get widened. The Nitto Invo 345/30/19 tires requires at least a 11.5" wheel. Would it be possible to fit a 11.5" wheel with a +30 offset on the Z? Rolling or pulling required?

 

lol.......

 

What's so funny?? I'm desperate for traction! :P

 

I've seen that same tire spec on a highly tuned G yesterday. Not sure if Z is comparable, but that G had a wide body kit.

 

Either widebody or minitub.

If you minitub you'll lose the IRS and have to w/ a custom solid rear setup.....You don't need 345's. Look at NMRA. 10.5" series are running 7-8 second 1/4's on 10.5" wide tires. You do know you can actually negatively impact your car by going w/ too wide a tire...right?

 

You also dont want to add any more weight to your axle then necessary. I say learn how to control it better first and get some suspension mods. I'd also say you would only need 285 for the rears

 

Just saw your sig....400 tq to the wheels. Dude....no street tire is really gonna plant in 1st on the street or at the track. Your best bet is to go w/ a drag radial such as Mickey Thompson or Hoosier if you want get some stickiness on the ground. But if you stick w/ a street tire setup all the rubber in the world IMHO won't hold didly squat in 1st.

 

Wide body

 

you need widebody, im running 345/30/20

 

Sure is. I got a buddy who did it.

 

Do you know what offset his wheels are? Was it a tight squeeze?

I currently have Toyo T1R 285/35/19 and have no traction at any gear when I step on it, and that's with the boost controller off, which is about 3-4 psi. Already have coilovers.

 

I call BS about not having traction at any gear at WOT....maybe 1st and 2nd but honestly it sounds like you just don't know how to use the power you have. Just my opinion though.

 

Try better tires and/or a staged boost controller. 345s will not fit without notching the suspension, flaring the fenders, or other major modification. With too much offset, you will hit the shock. With not enough offset it will rub the fender. Try something with more sidewall, get an alignment suited for straight line acceleration, and get a sticky tire. 1st gear may remain useless, but not 2nd gear.

 

345's should work, they work on the zr1 vette

 

If your really seriousl about traction, getting a better tire compound will do wonders over huge width. Toyo's are a good cheap performance tire but when it comes to traction they aren't the greatest, especially on an FI car. And i did a side by comparison with my front 255 Ps2's and a buddies 255 toyos on the same rim same offset and my tire was much less wide.

I suggest trying to fit a 295 PS2 or 305 PS2 and call it a day. You probrably won't be able to even fit a 345 and even if you did, the extra weight could be counter productive. Good Luck

 

With my current offset of +30, what should I widen the wheel to that'll fit without any problems? I'm guessing at least 10.5" or 11" would be required to fit a 305 tire? What offset is best to not rub without fender rolling? Best offset with rolling?

 

im running 305/30/19 toyo r888's on a 11 inch wheel +29 fenders rolled.

 

So you think I can get away with 11" wheel +30 with fenders rolled?

 

easy, im thinking of going with 5mm spacers too.

 

How much camber?