I bought a japanies Toyota Corolla Axio 2007 and it came with 15 inches stock tyres and no alloy rims, the car is superb in everything and there is only one problem, when there are more than 2 passengers in the car the car hits on bumps and gets low, the showroom owner suggested me to install 16 inches rims and tyres to it, I'm new to cars and don't have sufficient knowledge about tyres, rims and how they affect the car's performance.
I also don't know what this sort of combinaion means for tyres while I was searching the forum found terms like below:
195-65-R15, 195-60-R15 and 185-65-R15
Please recommend me tyre size and rim size for my car that won't hurt the performance and will make the car safe from hitting the bumps.
Thanks in advance.