Car starts to shudder when going over 60mph

2001 Vauxhall Astra 2.2 sri 16v
Car: Vauxhall Astra
Year: 2001
Variant: 2.2 sri 16v
Categories: Running Rough, Starting & Power Loss
i currently bought new wheels for my car i had went up two sizes from 16"to 18" but when i put the wheels on the car started to shudder and shake when i went over 60mph the guy i bought the wheels of said that the wheels needed balanced so i did that no luck the problem is still there.some people have said that it could be my tracking but dont know does anyone know if its a comin fault.
Problem added: Jul 15, 2011 (12 years ago)
Tracking very unlikely to be problem ,check wheels / tyres for buckles or twists by spinning same .
Answered Jul 15, 2011 (12 years ago)
Also check wheel nuts/ studs and wheel holes are correct fitting on your car .To make sure it's wheels at fault , put old ones back on and try .
Answered Jul 15, 2011 (12 years ago)
i have currently had the wheels balanced would it have shown up then if my wheels were buckled one garage has said that my track rod ends are gone but it does nt shudder when i put the old wheels on could it just be that the tracking is considerably worse when i put my new wheels on going from 16 to 18 inch.
Answered Jul 16, 2011 (12 years ago)
Knackered wheels / tyres .
Answered Jul 16, 2011 (12 years ago)
Increased pressure on the hub-bearings,might have to up-grade them to run the larger wheels.
Answered Jul 17, 2011 (12 years ago)
i have started hearin a knockin noise i dont know if it is comin from the front or the back wheels does anyone know the fault with either the front or the back wheels it sounds like everytime the wheel turns 1 revolution it makes a clicking noise can anyone help please before i take it to the garage.
Answered Aug 6, 2011 (12 years ago)

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