1) what is the Optimal tire preasure in the front and rear on Bridgestone RE 730's( with less than 2.000 miles) on a 4 door GSR for Auto-x? As you can imagine...I am a Novice..... ( Stock set up.....only modification I have is a Typre-R 21 mm sway bar at the back, Axis Ultimate brake pads)

2) I have the stock intake system but I have removed the cover for the air filter box......Is it OK to leave it like that or its better to put the cover back?

Before anyone suggests the 'Search' option....looks like there aren't any topics on 'tire preasure'

Thanks in advance....

 

I'm sure no one knows the ideal pressures for your particular setup, but I'd start out in the low-mid 40's up front and high 30's-low 40's in the rear.

But since you are a novice, it really doesn't matter to tell you the truth. Just run about 8-10 lbs more than normal and go have fun.

Air box cover removed really only makes more noise and it is questionable if there is more power to be had with running it off. If you want to mod your stock intake, best thing to do is get rid of the resonator, put the lid back on and you will be drawing air from the bottom of the airbox instead of the top.

 

Can't answer for your specific setup either. However, I have had good luck with them at 34 PSI at Pocono and The Glen. Start there and adjust accordingly based on temperatures and shock settings-in addition to the tighness of the course.

 

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somewhere on this site, there must be a post with the proper method for determining tire pressures, i just happen to be too lazy to go find it right now

but, start out with a baseline pressure of let's say 40f 35r, and get a white tire crayon from an autoparts store. Make a mark on your tire (from the edge of the sidewall inward to the center of the wheel) about 2" long. Do a lap and see how much of that crayon mark has been rubbed off. adjust pressures to your liking.

some good info here:
https://honda-tech.com/zerothread?id=146587