So the time has come for me to refresh my coolant system as I'm about to take my car 12 hours away to school in NC. Currently there is 105k miles on the car. Ideally I would go with a kit from ECS or getbmwparts, but I'm not sure how deep I should go. At 105k would it be a good idea to go ahead an replace the radiator, or should I skip it for now and allocate the funds to updating my suspension which I plan to do this summer as well.