smockers83 wrote:In deciding who's at fault of an accident, none. If someone pulls out in front of you, they pulled out in front of you. If you rear ended someone, you rear ended them. Mods will only cause your premiums to go up would be my guess, as it makes the car "more risky" since it isn't factory designed.
Very true for the fault determination. But the change in premium if any depends on the mods themselves and the underwriting criteria for the particular insurance company. As an example, generally, wheels aren't considered a higher liability risk. Perhaps a larger comprehemsive one, but depending on the company's stance, they may have written into the policy a limit for the amount that can be paid out on such a mod, or excluded it altogether. In such a case, they may offer to insure the mods for an additional premium.
On the other hand, if the policy is liberal with the mods, they may just choose not to insure most of these types of vehicles. If it is discovered that the vehicle has such mods, they may choose not to renew your policy when the policy period is up.
smockers83 wrote:The thing about brake lights, at least in MI, is that even if the car's brake lights in front of you are not functioning and you rear end them due to their brake lights not coming on, its still your fault.
I'd say generally, even if a car has no brake lights, the person behind is still priomarily at fault. However, there is a reasonable expectation that all cars have functioning lights and/or that drivers use the proper hand signals if the lights are not functioning as they should. In a pure comparative liability decision, I don't think any state would be able to ignore this. However, as there are different types of liability laws even if the person with no taillights technically had some fault, it may not apply to the case if there was not enough fault (as a percentage).