Tire Recommendations??? - ZR-1 Net Registry Forums

Starman · 05-19-2015

Guys, I've had my car 15 years and used GY Eagle GS and Nitto N555 Tires. Both flat spot badly on the rears after sitting just a coule of weeks. What luck have others had with different brands and what do you do to store through the winter?

Vetman · 05-20-2015

I have Michelins PS and I have not noticed it at all. My car often sits one week. Seldom two.

Dynomite · 05-20-2015

Quote:

Originally Posted by Starman

Guys, I've had my car 15 years and used GY Eagle GS and Nitto N555 Tires. Both flat spot badly on the rears after sitting just a coule of weeks. What luck have others had with different brands and what do you do to store through the winter?

Raise the tire pressure over the winter. I have not noticed Nitto 555Rs with this flat spot issue even if tire pressure gets a bit low over winter on a concrete floor. Maybe for the first couple miles but after that flat spot disappears.

WARP TEN · 05-20-2015

Agree with Dynomite--raise the tire pressures in the winter while in storage. A friend who has for many years worked on and stored classic and sports cars puts 60 psi in the tires while in storage. I have been putting in about 55 psi or so and have had no flat spotting on my Michelin Pilot Sports. However, this Spring I did develop a slow leak in one wheel that was eventually diagnosed as a bad valve and repaired free at Costco (where I bought my tires). In talking with the manager he noted that valves are only rated to 40 psi. Maybe the higher pressure caused it although a) it has never happened before and b) only one went bad. But if you do go with higher pressure over the winter (as I still plan to do) be suspicious of the valve if you get a slow leak.--Bob

batchman · 05-20-2015

In my experience, with several cars that sit for weeks (or longer), square wheels are a fact of life that dissipates in a mile or so. Increased pressures do help with this, and handling too

.

Cheers,
- Jeff

05-19-2015	#1
Starman Join Date: Sep 2008 Location: Speedway, IN Posts: 133	Tire Recommendations??? Guys, I've had my car 15 years and used GY Eagle GS and Nitto N555 Tires. Both flat spot badly on the rears after sitting just a coule of weeks. What luck have others had with different brands and what do you do to store through the winter?

05-20-2015	#2
Vetman Join Date: Feb 2013 Location: Yakima Washington Posts: 401	Re: Tire Recommendations??? I have Michelins PS and I have not noticed it at all. My car often sits one week. Seldom two. __________________ Jim 1990 Z # 2441 1959 c-1 230 HP 4 speed frost blue/silver 3 owner 2011 cts-v 556 HP, manual 6 speed 1955 chev 2dr ht PP 265 3 speed w/OD

05-20-2015	#4
WARP TEN Join Date: Apr 2007 Location: Lake Bluff, IL Posts: 2,096	Re: Tire Recommendations??? Agree with Dynomite--raise the tire pressures in the winter while in storage. A friend who has for many years worked on and stored classic and sports cars puts 60 psi in the tires while in storage. I have been putting in about 55 psi or so and have had no flat spotting on my Michelin Pilot Sports. However, this Spring I did develop a slow leak in one wheel that was eventually diagnosed as a bad valve and repaired free at Costco (where I bought my tires). In talking with the manager he noted that valves are only rated to 40 psi. Maybe the higher pressure caused it although a) it has never happened before and b) only one went bad. But if you do go with higher pressure over the winter (as I still plan to do) be suspicious of the valve if you get a slow leak.--Bob __________________ 2016 Long Beach Red Z06 #10281 "POPS Z" 1995 Polo Green #409 "WARP TEN"--Haibeck 350/510 package, 4.10s, Hurst, Stock Exhaust with QTP Cutouts --Sold but still running strong 1993 Quasar Blue #161 "HIL KING" --Sold but still running strong, now with more than 120,000 miles 1967 Marlboro Maroon/Saddle Corvette Coupe 300 hp/4-spd --Sold a long time ago ZR-1 Net Registry Founding Member #95 NCM Lifetime Member Favorite Quote--Attributed to Mickey Thompson: "Too Much Horsepower is Almost Enough"

05-20-2015	#5
batchman Join Date: Jun 2009 Location: I live at Devens, one run at a time Posts: 455	Re: Tire Recommendations??? In my experience, with several cars that sit for weeks (or longer), square wheels are a fact of life that dissipates in a mile or so. Increased pressures do help with this, and handling too . Cheers, - Jeff __________________ [I]91 ZR-1 #1840, autocrossing in SCCA BSP. FIC S/S's DRM chip/Watson/Borla/lid/LW batt&headlights, springs, shocks, pads & lines, quick rack & Turn One, camber brace, 32/22mm sways, A/C halfway deleted 17x11 & 12 CCW's, 315 & 335 Hoosier A6s [/I]