Tire upgrade thoughts please?
 

I have the 19" sport rays on my Z now. The rear size of 275/35/19 spin all the way through 1/2 of 4th gear and thats not good. I have the sport brakes so I am not looking at changing rims. I am also TT'd and am NOW putting down about 500 whp and 475 tq. While I am sure no tire will give me as much grip as I want there has to be something better than the potensa's I have now. Please give me your tire brand and size suggestions. Right now I am leaning towards Advan Neovas in 295/30/19. Thanks

Advans are good, NT05s are decent for the money, re50a's are good too

Toyo R888's worked for me at 760rwhp/715rwtq on my last 350z... Only spun through second gear on a good day. I'm sure with 500rwhp you wouldn't have much problems in second gear. 1st gear is definitely gone though.

But spinning halfway through 4th gear at only 475rwtq? I'm thinking it's just your alignment that's off.

Just had the align done and thats not the issue. Even during summer it spun out through 2nd and 3rd. 4th bcame an issue when it got cold. I just need bigger and wider tires. Thanks.

What are your current alignment specs? Camber/toe?

Guess the stock tires are just that crappy then. If you're looking for summer dry tires, I would give the R888 a try. With under 500rwtq, you should be completely fine in 3rd gear, and partially fine in second gear. I'd still get the alignment specs checked out if I were you. It's not enough power to spin 4th unless the 275 rears are already down to shreds.

If you want to do R888's, there are 295 rears available. They under-rate the widths... the 295 width R888's are more like 305 on other street tires.

RE-11's should do the trick too and they will last much longer than the 888s.

RE11 would be my choice too given all that power.

dang, burning through 4th gear... i would have to be on ice to do that on my stock Z. :icon17:

BFG R1s

Bear in mind that it is cold out this time of year and the more performance oriented a tire is, generally it will do worse in the cold.

and wider is not always better...if you're re-using your stock rims, I wouldn't go much bigger than 285. Then it just starts to "bulge" in the center making the contact patch more "round" instead of "flat", therefore reducing your contact to the ground even more.

^^ agree. wider is not always better. it's really in the compound and type of tire you use.

Thanks for the replies.....I went with the Advan Neova AD08 in 295/30/19 for the rear. Sticking with the oem potensa's in the front for now.

Good luck. You're going to have harsh understeer now though.

I can vouch for spinning into 4th.. I Have the same problem when its under 50deg outside. I think I might get some forgestars 18/10 ft and 18/12 in back. and call it a day!

advan neovas, definitely. I have even tracked with them, and lap times are within a second or two of my BFG R1s. And the 295s look right on the stock rim widths.