[Scareybear]

Originally Posted by MISTA FIESTA

From some of the stories ive heard, ford will try and pin a problem due to non stadard mods like pod filter, wheels and exhaust. I have booked my car in this saturday for the sparkplugs and have put the stock setup back in. Obviously i cant return the wheels/exhaust back to stock. Hopefully they wont try and say "oh its because uve got a diff exhaust or bigger wheels blah blah blah" because it sounds like BS to me.

Why would bigger wheels cause a stress to the engine? Just because they are bigger or heavier than stock. Then whats the diff of having a full car load with stock rims?

Depends on the wheels, many 17's will actually be lighter than the stock steel rims, the tyres are definitly lighter, and if they're putting them on the placard, ford should be ok with them. If the rims and tyres are a proper fit there should be no problems, this is why you should physically go to a reputable tyre shop, not buy them off the net where theres little or no responsibility once they've got your money.
I can see where your coming from, but if you're that concerned about warranties, whats stopping you from changing your wheels back to the stock rims? 25mins work with a jack...