<div class='quotetop'>QUOTE(glantv699)</div><div class='quotemain'>when i originally bought my wheels and put them on they were fine....this shaking is a problem that has developed over time and after repeatedly taking them off and putting them on for whatever job it may be...the shaking persists</div>
It likely persists because the hub, rotor hat, and studs aren't cleaned each time, allowing for added runout causing a vibration.
<div class='quotetop'>QUOTE</div><div class='quotemain'>after balancing there was an improvement but like ipaintu said most shops only balance up to certain speeds, so i still have to deal with shaking at 60+mph</div>
Thats wrong. When a tire and wheel is balanced its done so on a high speed or road force balancer, that spins the tire/wheel as fast as necessary to properly balance it. It doesn't matter if you drive 45mph or 85 mph, its going to be the same.
<div class='quotetop'>QUOTE</div><div class='quotemain'>tire pressure is pretty crucial for me it seems because that affected the severity of the shaking....mainly in the front, gotta have it even and ideal for the weather</div>
Air pressure is a HUGE factor, and it should always be maintained and kept at proper recommended levels. Recommended levels being availible on your vehicle door placard, gas filler door, glove box, and or owners manual.
<div class='quotetop'>QUOTE</div><div class='quotemain'>when i put my 16" steelies back on this past winter i had the same problem but i think with less wheel diameter it is less noticeable. who knows anymore.....I know everybody says fix it but I'm tired of dropping extra money on balancing (which can be thrown off simply by the removal of wheels or the adhesive weights detaching). if I drove more highway miles I'd be more concerned, but the G is good to me so if it ever gets to a point which i feel is BAD, i'll take care of it. pinoy's scenarios should help you diagnose the matter according to your wheel setup- his knowledge of the G is untouchable</div>
A 14" wheel is not going to be smoother than a 28" wheel just from sheer size. Its all about the wheel and tire being properly balanced, diameter doesn't matter.
Though if not installed properly weights can come off allowing for repeated vibration, not to mention improper measuring of where the weights are supposed to be placed on a wheel. Also it would do goo to mention there is 'slippage' of the tire on the wheel on occasion. It will be more common after the tire is first mounted, but if a car is driven hard it can persist.
<div class='quotetop'>QUOTE</div><div class='quotemain'>hopefully you can get somewhere with this isssue....personally i think making aftermarket wheels ride perfectly in the G is somewhat of a challenge and will end up being costly if you want a stock feel</div>
I've done hundreds of cars with aftermarket wheels with each and everyone of them rides as smooth as stock, with the obvious exception of added diameter wheels (i.e. 20" wheels) having stiffer tires with more road feel. However they ride smooth as factory.