Kamal, I was just informed that Bridgestone makes the ER300 in the 185/60R15 size now.Please check with the local tire shops.
The 195/60R15 and 205/60R15 might cause scraping issues on full lock.If you want to go for these I would suggest that you do a test fit and check for clearance.Do a full lock turn from side to side in the front and check the clearance on the rear with full load(pile in the tire shop employees for this).