CGT000

My car has been sitting in garage for the last 3 weeks due to snow in the area.
I don't want the tires to develop flat spots or get damaged. Would over inflating the tires help? If so, what would be the ideal tire pressure?

neanicu

Yes,you can put more pressure than normally recommended for driving to prevent flat spots. If you look along the tire you will see what the manufacturer max pressure is and you shouldn't exceed that. Just don't forget to go back before you start driving.

CGT000

Very helpful. THANK YOU!

CGT000

One more question. What is the normal tire pressure? I have mine setup as follow :
31 psi front and 33 psi rear

neanicu

Check for a sticker on the inside of the door/hood or the owner's manual. Honestly I have no idea where they would put it in a CGT.

neanicu

Ok,I found a reference at 32 PSI. Either way,you want to check the pressure on cold tires,before you start driving.
I think you're ok with 31 front and 33 rear.

jadatis

Those flat spots will disapear after about 15 minutes of driving , so I heard for Motorhomes wich mostly stand still for even half a year.
But if you want to do something you can go up to that maximum pressure given on sidewall, wich is the real maximum allowed for P-tires and XL/reinforced/Extraload tires.
Mind that the deflection of tire goes quadratical with the pressure rising, so 120% of normal pressure gives 1/144% = 71 of the deflection.
And then even the car is empty so less weight on tires wich also gives lesser deflection.

If your car stands still for longer times in the year , you can also put them on rounded blocks in about the same curve as the tires, called banana's.
Or 4 little holes in the garage .

CGT000

I inflated all 4 tires to 46 psi. I was also told to buy a set of "tire cradles" but after looking at them I realized it wouldn't be easy to get all tires on them at the same time so I didn't go for it.

W8MM

Tire cradles are a little problematic for the Carrera GT because of the minimal ground clearance. One has to drive over them to use them. They tend to hang up on the undercarriage.

Putting 50 PSI in the tires is the consensus fix for flat spotted storage avoidance.

LexVan

Will be covered in your manual under storage.

Most 911's for example, recommend over inflation of 55-58 PSI depending on variant.

I'd expect yours to be similar.

Has nothing to do with "max PSI" on sidewall.

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CGT000

Good point. Will check manual and adjust accordingly. Thank you

W8MM

Agreed.

The only reason to limit inflation to sidewall maximums is to cover the case where one forgets to reduce pressure before driving

LexVan

Hope you are using a battery maintainer too. Wouldn't hurt to stabilize your fuel during this period of no/low use.

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CGT000

Check Check on both of them.