I planning to get some Work wheels. But I need to know if 18*8 with 35 offset rims will look weird on my car. Because I got Rotora Big brake. I'm afraid it might not have enough clearance on the brake. What is the lowest offset you can put on the Rsx? They only have 28, 35, and 45 offset. Thank you...

 

I think, that for you, the 35 might work best. 45 might bring the wheels too far inboard, and if it's too far they'd rub on suspension or the inside part of the wheel well.

Dig around on ClubRSX.com to see what they've been able to fit. I'd also measure how much clearance there is now and compare the findings to what some of these calculators tell you:
http://gs.tolan-hoechst.com/tirecalc.htm
http://www.1010tires.com/WheelOffsetCalculator.asp

 

I got this from http://forums.clubrsx.com/showthread.php?t=368629

Shown below are a list of wheel sizes, offsets, and tire sizes known to work with them. All of the information below is based on RSX’s with out widebody kits an unrolled fenders. This way everyone will have an idea what works on a stock body, lowered RSX.

16X7: +40. Tire sizes: 205/55-16 to 225-50-16.
16X7.5: +43. Tire Sizes: 225/50-16.
16X8:
16X8.5:
16X9:
17X7: +35 to +60 (common offset is around +42). Tire sizes: 205/45-17 to 225-45-17.
17X7.5: +40 to +48 (+35 w/ no drop). Tire sizes: 205/45-17 to 225/45-17.
17X8: +35 to +48. Tire sizes: 215/45-17 to 245/45-17. (245/40-17 was used with +40)
17X8.5: +40. Tire sizes: 235/45-17.
17X9:
18X7: +37 to +45. Tire Sizes: 205/40-18 to 225/40-18
18X7.5: +38 to +48. Tire sizes: 205/40-18 to 225/40-18.
18X8: +37 to +48. Tire Sizes: 225/40-18.
18X8.5: +45. Tire sizes: 235/40-18.
18X9: +40. Tire sizes: 245/40-18.
19X7: +40 to +45. Tire sizes: 215/35-19 to 225/35-19.
19X7.5: +43 to +48. Tire Sizes: 215/35-19 to 225/35-19.
19X8: +35 to +47. Tire sizes: 215/35-19 to 235/35-19.
19X8.5:
19X9:
20X7:
20X7.5: +42. Tire Sizes: 225/30-20. NOT LOWERED! Only on '05 and up???
20X8:
20X8.5: +42. Tire Sizes: 225/30-20. NOT LOWERED! Only on '05 and up???
20X9:

 

Does 17x9 +60 fit?