Wheels and Tires

I am looking for a knowledgable honest mechanic in or around Monmouth/Middlesex, NJ

My 2006 911 Carrera Cab now has 235/35 X 19 and 295/30 X 19 tires on 8 and 11 inch factory wheels.  Can I put a new set consisting of 235/35 X 19 and 305/30 X 19 tires on these same wheels safely?

I have a 2009 C2C w/ Standard 18" Carrera IV Wheels.  Will 19" Carrera Classic wheels from a 2009 Carrera S (Frt 997.362.156.03, rr 997.362.162.04) fit my car without issues?

Greetings PCA Experts,

I just bought a 2007 C4S this summer and am thinking about a winter tire/wheel set.  On Tire rack, it receommends 235/40/R18 & 265/40/R18 whereas Porsche Tequipment finder recommends 235/40/R18 and 295/35/R18.  I'm not at all familiar with the range of tires and sizes appropriate for this car.  If I buy from Tire Rack, will they supply whatever spacers will be required?

Many thanks, Phil

I have a 2007 Carrera with 19" wheels. It is time for new tires (the existing tires are Michelin Pilot Sports).

I recently purchased some Champion RG-5s for my car and had my old tires mounted on them.  The new wheels are 19x8.5 in front and 19x11.5 in back.  I have started to do some autocrossing and would like to put some stickier maybe wider tires all around.  I know the back wheels and fender clearance will let me go to a 305-30-19 tire from my old 295-30-19.  I don't know if I can or want to go any wider there.  Up front I am currently running 235-35-19 tires (Michelin Pilot Super Sports).  I'm wondering how wide I can go there without having rubbing problems on my wheel wells when turning shape

Model: 997, Year:2007, Mileage:35,000, Type of use:Both Street & Track
I had a set of aftermarket TPM sensors mounted on a set of track wheels recently. The car detected the sensors and worked fine. When the OEM wheels, with the original OEM sensors, were reinstalled the system stays in "learning" mode. After over a hundred miles in this mode I tried to change the settings to "winter tires" and then back to "summer tires". The display hasn't changed and no tire pressures are indicated. Advice on what to do next? Thanks!

Model: Carrera 4S, Year:2008, Mileage:20000, Type of use:Street use only
I think the battery in my tpms has died. The car is 5 years old. I'm going to replace all of them. Should I replace the valve stems also?

Model: C4S, Year:2011, Mileage:4,500, Type of use:Street use only
How should I correct for lower ambient temperatures when setting the "cold" pressures on my street-only 2011 C4S? Is the same cold pressure used when ambient is 32 deg F as it is when the ambient is 90 deg F? Or is some compensation made for different ambient temperatures? And if so, what should that correction be?