I guess you guys must be bored of all the VCU questions BUT I'm new to the Land Rover world and need to ask another one. I read the definitive VCU guide on the forum and it has answered many questions i had and has raised a few more.

I recently bought a 03 TD4 Freelander and on the journey home, this was before i joined the forum, i noticed the rotating vibration from what i thought was the prop shaft, then didn't think much more of it. My TD4 had been been fitted with brand new Carbon series tyres, strangely, on only 3 corners with a pirelli on the other corner which has 2 nails in it keeping the air in. So i thought, ill change that to the spare as it was clear of foreign bodies. Unbeknownst to me someone has fitted a 50 profile tyre as the spare, with the others being 55's, Sooooooo on my next journey, of about 10 miles the rotational vibration had changed its frequency from about 3 times a second to about 1 a second, a lot longer than the first journey i had in the car. Once i had scoured the forum i quickly changed the wheels back over. The rotational vibration has now gone back to the 3 times a secondish, but. Have i arsed my VCU? (All these vibrations were felt above 50mph) Also, is a perfectly running VCU silent or is there some rotational vibration felt through the bum and in the cockpit? Is it worth getting the VCU looked at? I do have a 3 month warranty with the car so if it is pooped i could get a new one on the warranty.

Now I've got to source one Carbon Series tyre, which after a google, seems to be very popular in the US, and not here. Or do i risk just getting a brand tyre of any old make? I don't really have the funds for getting 4 brand new tyres. Well, i don't have the funds.
Ive tried to give as much info as possible so i apologise for my newbieness.
Thanks for your time. :)
 
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There should be no noise or vibration from the VCU/props.

If you can't afford to sort the tyres out so they are all the same - take the props & VCU off. You may as well do this, because if you don't you will have to anyway plus you'll have a knackered IRD and/or rear diff !

Seriously, do it before you drive it again and hope the damage isn't to much already.
 
Hmmm not really what I was wanting to hear grumpygel. I was hoping for, yeah, thats fine mate :) so apart from slinging the propshaft, I should get it checked out and probably take advantage of me warranty. And then be more careful on tyres in future.
Thanks for the info anyway!
 
get that prop off, buy two new tyres. fit the new pair on the rear the. put your prop back on and hope the damage hasn't already been done...
 

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