Way too small in diameter, your ride will be noticeably harsher, ride height drops by 1cm and fender gaps increase by the same which makes it look ugly. The closest alternative is 245/45/17 but it's too wide for your 7.5j rims. Another option which you can use is 215/55/17 which is about 0.5cm taller so your ride height also increases by the same. Your comfort will be improved but consequently handling will be more slushy. So this is the only option available for you. I'd suggest you just stick to original size.