Matt Alter

I have a 99 996. 18" My r are 45 and f are 40. Doing all street driving. Any suggestions on dropping them down a little.

I was thinking, r 43 f 40.

txs
M.

Rubik

CTP: 36 front, 44 rear

Joe Ricard

(read like forest Gump) Momma always said "Check your tires, If their flat put air in them. If not well leave them alone.

JayG

lowering the rear relative to the front will tend to give you more oversteer
I'm not saying that is good or bad. Its just physics

DBJoe996

Per Owner's Manual, and like Rubik said, 18" wheels 36 Front 44 Rear

alpine003

Lower them down to whatever suits your driving preferences and setup. There is no wrong or right. For example, I'm found 34f/38r to be best for my GT3 CO setup.

People often mistake factory recommended tire pressures and don't realize those settings are for a full load.

Gator996

36/44 for me too unless I am on the track.

Rubik

Alpi, honestly, I've been thinking about lowering the pressure a bit. LA streets are rough, so the current set-up is a bit bouncy. But I'd hate for lower pressure to damage the wheel..... because the streets are ****. Also, with the current set-up, I'm noticing more wear in the center of the tire vs. the margins.

Byprodriver

I find 37psi in the rear for oe tire size gives most even wear assuming minimum load of driver only. 38-40 in front depending on balance quality & road quality. 235/40/18 gives a little more protection for rims.

alpine003

If you stay above 35, you should be ok. I've seen my fair share of potholes living in Chicago and haven't had any issues.

I get a lot more mechanical grip having lowered the rear, especially around mid-corner bumps which cars tend to encounter more often on the streets.

Rubik