I have quite a few questions. I am a new member here to Acura World. I recently bought a 2003 Acura TL type S. I would like to know if anyone knows the biggest size of rims I can fit on my car and about a sound system, can anyone recommend somewhere to buy a head unit that would require the least amount of mounting and extra parts bought and what size speakers fit into this car. Lastly, I was wondering if there were any secret tips about this car, like for my Corolla I had, I could put in a new air filter and I was saving literally 20 dollars of gas in a month or for the battery I could add just simple distilled water to the elecrolytes in the car and it would lengthen the battery life considerably. I have only been on the site for about two days and I'm feeling a boy who sees the light lol this site is really amazing and I'm extremely grateful for any and all answers posted on this. Have a great day everyone!