Looking at buying new rims, different centre bores and offsets.

ANSWER : Hi there. You can change the rims on the vehicle and the 5mm offset difference will not make much difference with the mounting and clearance with anything. Keep in mind, when changing a wheel from 40mm offset to 45mm offset then there could be an issue with the drivability of the car at highway speeds and cornering. If your rims have TPMS (tire pressure monitoring sensors), then you will want to switch them over to the vehicle and you may get a tire light. If you get a tire light, you will need a technician at a tire shop reset the light for you.

ANSWER : A road force balancer is meant to check tires for pull in one direction or another and balance a tire up to about 60 mph. Some tire balancers will check tires for higher speeds. You may have an imbalance that most machines cannot measure if it comes in after 65 mph. You can see if there is a shop near you that can do high speed balancing? You may have a front axle that is causing the vibration also. I suggest installing the original rims and tires on the front only to see if problem is still there and if so have the front axles checked for damage and replaced if any damage or looseness is noted.

ANSWER : Hi there – you want to find hub-centric rings for your specific wheel-hub combination. These steel rings take up the excess space between the wheel hub bore and the hub itself, and allows the correct transfer of vehicle weight to the wheel through the hub, and not through the wheel bolts/nuts. Check with your wheel supplier, major custom wheel suppliers, or aftermarket custom auto parts vendors for these rings.

ANSWER : This may be a sign of a failing voltage regulator or potentially a bad grounding problem causing a draw on the system. The voltage regulator is a unit that regulates the charging of the battery by the alternator. Often times this will result in the alternator allowing too much power to be delivered to the battery resulting in damaging wires and prematurely sometimes destroying the battery. In other cases it may result in the alternator not supplying enough power to the battery, resulting in undercharging the battery or not charging it at all. In either case, I would recommend having an expert from YourMechanic come to your location to diagnose your vehicle’s charging system.

ANSWER : Hello.

A crank but no start condition can be caused by many things. A few common causes are a faulty crank position sensor, or issues with the fuel system. The crank position sensor is used in the engine’s fuel calculations, and in some cases it’s failure will disable the engine.

It may also be possible that there is issues with the fuel system that are preventing the engine from running. If the fuel pump or injectors have an issue the engine may not run correctly, or at all. It may also be possible, for either case, that the issue may be wiring related.

I would start by trying to determine if the engine is getting fuel and then going from there. If you need assistance with these checks, consider YourMechanic, as one of our mobile technicians can come to you in order to diagnose your starting issue firsthand for an accurate repair.

ANSWER : Hi there. The only thing that I could think possible is causing your problem is that something may not have been correctly installed while your son was completing this maintenance. However, if your engine was difficult to start before this service, it’s possible there are different components that are damaged that simply didn’t resolve the issue. The only way of knowing what is going on with your Trailblazer would be to have one of our mobile mechanics in your area come to your location and complete a car is hard to start inspection.

ANSWER : Hi there. Chances are the noise heard from the right front wheel is the result of the replacement rim and tire. This may not be safe to drive and should be corrected, before continued driving. If the rim is correct by application, double checking the lug nuts for proper tightness would be a good place to start. Something may have bent with the impact to the curb. Proper diagnoses should be performed to avoid unnecessary repairs. I recommend having your vehicle’s knocking as the wheel turns be diagnosed and repaired by a certified technician, such as one from YourMechanic.

ANSWER : Hi there. Over time, many different items can cause headlights to fade. In most cases, it’s a caused by debris that naturally builds up on the lens that causes it to become cloudy. In other cases, the inner seal that protects the headlight from water can wear out and condensation can collect inside the headlight. It is also possible that a loose electrical connection or a relay is damaged and can cause a consistent restriction of power to illuminate the bulb. It’s always best to have a professional mobile mechanic come to your location to complete a headlight not working inspection to determine what is causing this issue before deciding to make repairs.