HVN N HEL

I am in desperate need of expert advice on rear tire replacement.
Here's the situation:

I just had HRE 545s and Pirelli PZeros mounted. Here are the specs:
Front: 19x9.5, +30 offset, and 275/35
Rear: 19x10.5, +31 offset, and 295/30.

After installation, it became visually obvious that the front's outside diameter with wheel and tire is larger than the rear. Of course not only does it just not look right, but as most of you know, the SLIP/Traction Control System now kicks in when going into steep turns and curves.

It would seem the easiest fix would be to replace the rear tires with 295/35s, but Pirelli doesn't make them. Another option is to go with Pirelli 305/30s (which are on 60-day backorder), but don't know if these are just too massive, even if the fenders are rolled. It almost appears that they might fit without any rolling because the car is not lowered and the +31 offset allows a little more room, but mathematically, the 305/30s would still be smaller than the front.

I am looking for a solution that would not necessarily require having the fronts replaced along with the rears in order to have a symetrical appearance AND have the fronts and rears either the same OD or the rears slightly larger.

Has anyone experieced this problem and/or have any advice?

I hope these pics help you gain a visual appreciation of my situation.

Thanks in advance for your help!

HVN N HEL

Pic#1:
Having problems adding pix...

Phatmitzu

iTrader: (34)

pic???

lowrider

iTrader: (3)

Actually, if it were me. I would move your fronts to the back and replace the fronts with 245/35/19s. Nissan builds this car with the VDC, slip, and the handling characteristics around a certain parameter. That paramater is that the front wheel and tire combo be 25.7" or so in Outside Diameter, and the rears to be 26.7" or so in OD. You have made the fronts 26.5" Give or take, depending on brand. The rears are 25.9" in OD, or smaller than the fronts. The "Z" doesn't like this.

A 305/30/19 would be 26.3" in OD, still too small, you would lose the stagger.

Again, IMO, move the fronts to the back, and put 245/35s on the front.

Lou

HVN N HEL

Thanks for the advice 'lowrider.' Looks like the fronts will be replaced with 275/30-19s. This will definitely fix the problem, but the 30s sure don't add much rim protection.

I read in another thread that HRE claims that they went out and hammered their 350Z with 30s front and rear and had no problems. I don't have to worry about potholes too much in SoCal, but I'll still have to be careful. If I do bend a lip, I wonder what HRE will charge. Hope I never have to find out.