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Bryan
04-13-1999, 10:03 AM
I currently have a new 323. It is only 2 weeks old. I got the premium package which came with the Michelin Energy 205/55/HR 16 Tires. I am considering changing the 16 inch Michelin Tires with the Michelin Pilots 225/50/ZR 16's. <br>I am hoping that this would take out some of the body role when going driving hard into a corner. Does anyone have any comments or suggestion on my decision.

Andy T
04-13-1999, 02:32 PM
Fatter tyres will not affect body roll. Fatter 225s vs 205s will give you a little more ultimate grip, and maybe improve the initial steering response going into a turn, but will make the break-away that much more sudden (particularly at the rear in the wet). Also, bear in mind that you will be fitting 225s on 7" rims which is fine, but not optimal; a 7.5" rim or 8" rim will support the 225s better. <p>Also I would wager that the 225 Pilots are heavier than the 205 Energies, so you will lose some ride comfort as the unsprung weight goes up (you are still within design limits though).<p>I would think about suspension changes if you want to decrease body roll. If you have standard suspension instead of sport (which I suspect is the case with the US premium pkg), you may be able to retrofit the sports suspension bits - shocks, anti-roll ba... sorry, sway bars, springs - but either way it'll be quite expensive.<p>Andy T<p>: I currently have a new 323. It is only 2 weeks old. I got the premium package which came with the Michelin Energy 205/55/HR 16 Tires. I am considering changing the 16 inch Michelin Tires with the Michelin Pilots 225/50/ZR 16's. <br>: I am hoping that this would take out some of the body role when going driving hard into a corner. Does anyone have any comments or suggestion on my decision.<p>

Andy T
04-13-1999, 02:35 PM
Whoops - I meant to say that fatter tyres will not *reduce* body roll at a given level of grip. <p>Andy Y<br> <br>: Fatter tyres will not affect body roll. Fatter 225s vs 205s will give you a little more ultimate grip, and maybe improve the initial steering response going into a turn, but will make the break-away that much more sudden (particularly at the rear in the wet). Also, bear in mind that you will be fitting 225s on 7" rims which is fine, but not optimal; a 7.5" rim or 8" rim will support the 225s better. <p>: Also I would wager that the 225 Pilots are heavier than the 205 Energies, so you will lose some ride comfort as the unsprung weight goes up (you are still within design limits though).<p>: I would think about suspension changes if you want to decrease body roll. If you have standard suspension instead of sport (which I suspect is the case with the US premium pkg), you may be able to retrofit the sports suspension bits - shocks, anti-roll ba... sorry, sway bars, springs - but either way it'll be quite expensive.<p>: Andy T<br>

pj
04-13-1999, 03:50 PM
I have been looking for 17" replacement tires and wheels for my Z3, which comes with Pilot HX 225/50ZR16 tires standard. My current choices 225/45ZR17 Pilot SX tires or Bridgestone Potenza S-02 Pole Position tires.<p>I agree with Andy T, though; fatter tires probably won't reduce body roll. <p>pj

John
04-13-1999, 04:30 PM
No problem, since the 323 sport also comes with 225/50 on 7 inch wide rims. The grip may be improved a little bit, and a 225 fills the wheelwell up pretty nicely for appearance sake.<p>One consideration: depending on where you live, a summer compound 225 will not give optimal grip in the winter. Something to think about before changing over. If you live in the south, who cares?<p><p><p><i>: I currently have a new 323. It is only 2 weeks old. I got the premium package which came with the Michelin Energy 205/55/HR 16 Tires. I am considering changing the 16 inch Michelin Tires with the Michelin Pilots 225/50/ZR 16's. <br>: I am hoping that this would take out some of the body role when going driving hard into a corner. Does anyone have any comments or suggestion on my decision.<p></i>


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