Hi everyone, I got the dealer to include a spare tire and kit for my '21 A-Spec and they still left me the inflator and sealant. After closer inspection I now realize this is a combo unit with the sealant built in and inline with the air hose. There is just a switch to "activate" it. If I leave that switch just on air I assume no sealant will leak out and gum up my tire but wanted to check. I flipped the switch while checking it out (turned off) and quickly moved it back so hopefully none got into the line. I guess I can run it disconnected from the tire to purge anything. My left rear is a psi or so low and I'm a little neurotic about my tire pressures (37F/36R) always being perfect.

Thanks!

 

Went to mess around at lunch and answered my own question. Turned on the pump and depressed the stem, air only no sealant coming out. On the downside, as you screw the air hose onto the valve stem you lose air as you tighten it and when you remove it. So using this pump to add just a few PSI to your tired is not the best. You have to overinflate and then slowly drop and check the pressure. Either way, any pump is better than no pump when you need it!

 

I noticed you answered you own question. psi is honestly not the best way for air pressure in the tire. Using bar is easier to figure out, but the point im trying to get is 1 or 2 psi would not make a difference to the point your car will suddenly break. Yes over inflating the tire to 38 psi and pulling it fast enough off that it ends up as 37 psi is fine. 36 means you spent a little too long taking it off. The recommended is 37 square set up. So you should be golden.

I have a porsche cayenne that i brought into porsche for service and it came back 38 on a rear tire and 34-36 on the rest. So if porsche mechs dont give 2 shits about a few psi why should the normal person care?

 

They are lazy, that's why! Ive encountered good and bad service techs at all kinds of different dealers. Calling some of the people that work at a dealer shop "mechanics" might be a bit of a stretch..... Some are true mechanics and ive had great work done at dealers. Some are just techs who rotate tires, change oil and apparently cant read a tire pressure gauge. Most people who enjoy driving, care about their care and are in tune with how it rides can absolutely feel the difference between 34 and 38 psi. Huge difference.

Also, this is America and we use psi! *eagle screech!*

 

If you use sealant to emergency inflate your tire, many tire repair shops will tell you that you have to buy new tire. Always try to replace it with spare unless its a true emergency

 

I had the dealer install the spare tire kit when I got my RDX. So I am good to go. I always keep a plug kit in the trunk, so the inflator along with plugs should get me going.