Aggravated front tire wear (outer edges)

Under inflation. When the tire doesn't have enough air pressure, the center tends to be pushed up from the road. Thus causing outer wear on both sides. alignment problems cause wear on one side or the other. Over inflation causes the center of the tire to wear .

tires need to be balanced that will fix vibration. tire wear is a camber problem. get a four wheel alignment

TIRE EITHER TOO BIG OR FENDER INNER WELL BOLTS LOOSE CAUSING INNER FENDERWELL RUB THE TIRE EDGE.OR HAVE THE FRONT SUSPENSION CHECK FOR DAMAGE OR WORN INNER OR OUTER TIE ROD ENDS.

well sometimes they claim that this shock has a 45,000 mi average life, Also note the wear on the tire if there is any. An over inflated tire will wear in the center more than the edge, a under inflated tire will wear on the outer edges, a bad shock can cause a tire to wear not necessarily the tread but the smootness of the tire, is it all rough with raised tread edges or uneveness? Does the vehicle have sway or does vehicle bounce or washboard when hitting bumps? does the shock have visual signs of fluid leak? These are all signs of shock failure and should be replaced. And not necessarily al four at he same time, replace shock with manufacturer equipment if replacing only one, if replacing two on the same axle you can use aftermarket matched shocks or factory oem.

The shuddering sounds like you need your brake rotors turned or replaced, The wearing of your tires could be worn tie rod ends and that would make the shuddering even worse

30 psi. If the outer edges are wearing the alignment may be off. Have it aligned and rotate the tires.

Tires need balanced or you need an alignment. Make sure tires are inflated to max cold psi

First have wheel bearing checked for signs galling of the bearing races. That could cause the noise. Have the front alignment checked. To solve your tire wear problem

Be sure to have tires rotated every 5000-6000-miles. Walmart is good for that.
Outside wear is normal for fronts from the turns at higher speeds.
When tierod ends were replaced it is advisable to get front end aligned. Its not impossible to replace with minimum change but if settings were done with worn parts, new parts will change it.

Hello!

the Chevy G-Van is very rough on tires, especialy the inner and outer edges as it is so top heavy and sways som much, the weight is consistantly on the outer edges of the tires. causing the edges to burn off. if this is the type of wear you have. there really is not much you can do...i assume the repair shops have confirmed the alignment angles are in specs...if this is so. i stongly suggest purchasing tires that have a close tread on the out side edges. to be more specific. if you purchase an off road tire, it has large voides between tred lugs allowing for the debris to be evacuated quickly, forcing it to the outer edges of tire and out. if you purchase a highway type tire that has a "closed" tread on outside edges of tire you will expierence better success with keeping tires ono the front end longer that 15,000 miles...i dont know what brands of tires are in england, but i would suggest a Uniroyal HDH (heavy duty highway) or similar tread pattern..this will help you out alot...below is a link to the uniroyal site, view the HDH vs the HDT, the large voids i speak of to avoid for your truck is on the HDT (heavy duty traction)...good luck...let me know how you make out!

http://www.uniroyaltires.com/uniroyal/productIdSubmit.do?sc=TSN
vs
http://www.uniroyaltires.com/uniroyal/productIdSubmit.do?sc=TSN

ps your 4 thumbs up i would greatly appreciate ;)