18" fit fine. I had these OZ's on the LS for a day. Didn't touch when turning. Main thing to look for wheels including OEM is the offset. They usually have the same bolt pattern, but the offset will determine if the calipers touch the rim. I know the IS series wheels won't fit the LS.
I've used the Conti ExtremeContact ones on my Lexus (18"), Subaru STI (17"). Good tire for the price. Extreme high demand. Also used Michelin Pilot Sport A/S on my 18". Those are great tires , just tooooooo pricey.
I've used BG44K Fuel Injector Cleaner. Just add a can to your gas. Never had to go in thru the air-cleaner hosing. I could see you spraying starting fluid thru the air-cleaner hosing if the car's having problems starting.
I agree w/ Army One. If you're not getting fuel across, then you could have a bad pump. Also worth checking the fuel filter.
However I doubt it's a clogged filter unless you tossed a chunk of dirt into the tank during your last fill-up.
Just some thoughts. Good luck.
Sonny
Suggestions:
1) Check all cables. vacuum lines that nothing got disconnected during the wash
2) See if you're getting a spark on each of the cables. 3) If yes, not a bad idea to inspect each of the plugs to make sure they are ok.
Is there a code list somewhere on the site? I recently had to reset the airbag light, after removing the instrument cluster to replace the heater core.
Thanks
Sonny