rusnak

Mismatched tires (check the speed ratings) should be replaced and matched before any speed work. Alignment and corner balance, safety check, and brake service are very good ideas imo.

And I would guess you don't have very good rain tires.

I can togally relate re: gf not understanding Porsche passion.

ron mcatee

I think if you look in the owner's manual it will tell you that the front's are to be 29 psi and the rears are 36 psi. this assumes you are running stock wheel 6 & 7 x 16. also, never run mismatched tires. You are asking for trouble no matter how long you've been driving.

LShemtob

thanks for all your help. I def want to do some de, and I will look more into doing it.

re: pressure. I read on another thread that the manual specified psi was made for tires that were from that time (25 years ago) In respect to today the psi levels are appropriate to todays tire.

Now on to the tire info. Pirelli p6 are made for all seasons so I am ok there. Bfg ZR4 are not. Heres what i found on carreview.com:

Strengths:
dry traction is good from a standstill and in quick lane changes

Weaknesses:
if you have a car witha healthy engine such as in my impala ss and you get on the gas at all in bad weather hold on and hope you can control a skid and if its dry out hope no one has a sprinkler on cause if you hit that water you may spin or fishtail excessively as ive done many times with these tires (my car is rear wheel drive)

Summary:
its a good dry weather tire overall and a great highway performer in good weather

[end paste]


Pretty horrible. I wish I spent some time researching my tire choice instead of listening to the tire stores owner.

Also I will look at the sway bars mounts over the next few days.

Thanks again everybody I appreciate your help and support.

Ed Hughes

The suggested pressures were to induce understeer tendency to protect inexperienced drivers from the tendency to oversteer on throttle lift.

If this is a daily driver, then you should consider tires capable of wet performance. However, even at that, we don't see enough rainfall in SoCal to warrant an all season tire, IMO. I run track tires year round. But Ruby doesn't go play when it rains.

rusnak

Sorry, I did not mean to suggest "rain" tires per se. The premium "ultra high performance" tires all handle Calif rainstorms just fine. Not puddles, mind you......just wet road. Some tires like Yoko AVS Intermediates are just plain scary in the rain.

Daniel Dudley

Where I live, summer tires and cold rain are no fun. Not sure what your specific problem is, but exaggerated inputs of brakes, steering or throttle will work in the dry, but not in the rain. In the rain you must be smooth. Brake smoothly before the corner, get the nose planted and turn in smoothly. Ease into the throttle.

You can always check relative traction by braking in a straight line. If you have a lot of grip, you can be fairly aggressive when braking. If you don't the tires will lock right up.

Ed Hughes

The Goodyear F1 DS 03 tire, not sure if available in 16", was one of the best street tires, also the last, that I ran on Ruby. I also used them for wet track tires. I've run laps in the dry with them too, and they gripped beautifully, and communicated when they were ready to slide-no surprises. They wore very quick though, which is the trade-off.

rusnak

They were not available in 245 when I looked. But the Fuzions were out of stock at Tire Rack a few months afo as well. Maybe 16s are made in small batches?

Ed Hughes

Just checked TR, they are available in 205/245. Pretty cheap too:

205/55ZR16 91W Load Index 91 = 1356lbs (615kg) per tire
Speed Rating “W” = 168mph (270kph) $144.00 (ea.)
245/50ZR16 97Y Load Index 97 = 1609lbs (730kg) per tire
Speed Rating “Y” = 186mph (300kph) $179.00 (ea.)

rusnak

Ack!! Better grab them pronto!!!! No more off-brand.

Amber Gramps

Just my thoughts:

https://rennlist.com/forums/911-foru...egative+camber

talane

Let me first say that I am making no assumptions here. This same issue occurred to me when I first got my 88 Targa. Ultimately, it was all me. I went from a 928 to the 911 and had not even thought about the lifting off the pedal issues. I'd like to blame everything from my tires to my radio but it was me. Dry roads didnt do it but as soon as the rain came I was the" Porsche on Ice Show". Funny though I had never heard my friend scream like a little girl until we came off the on ramp backwards across a couple lanes of traffic in New York. Only in the 911 can I get anyone to yell "Oh God, Oh God". I think I'll wait for another good rain and take my wife out for a ride.