I had changed the complete driveshaft on the passengers side(made no difference), but just the outer(bit that goes through the hub) on the drivers side. The drivers side seems to be made up of 3 sections, the outer shaft(bit through the hub), the inner shaft(middle section with the spider on it(3 little bars sticking out with roller/ring bearings on)) and then the cup shaft(me making up the name!!) that connects to the gearbox(that the spider sits in which is triangular up).
Sounds exactly the same as mine to be honest. There is vibration on the steering wheel, but I can't really say where it is specifically through the wheel as it seems to be the front endof the car as a whole. I was supprised how bad it actually is from just being a drive shaft. I just worked some grease into the roller bearings after the shaft/spider was out of the cup when I changed the wishbones. It made a massive difference and completely changed the way the car felt and drove, it's just a shame the garage put a jubilee clip on instead of a proper clip and it lost all the grease again.
I'm going to attempt to do the same thing again tomorrow to the ring bearings and see if I can save myself £125 or so on getting the new driveshaft(as it virtually fixed it for a week as I did this last time). The place I am looking at to get the driveshaft from is here if I need to replace in the end is Car Parts Direct
I've not used them before but it's £125 for the shaft and a £50 charge which is refundable when you send your old shaft back. I'm going to give them a bell tomorrow to try and ascertain if it's the complete shaft for £125 or just a section. From the way it's written on the site it sounds like it's the complete shaft(outer and inner) as it doesn't specify inner or outer shaft on the order form. Hopefully this should be easier to replace as it's just the hub nut to remove and the wishbone balljoint to pop out(easier than it sounds I know!!).
Shaz, that is almost exactly the same as mine. Upwards of 3500rpm the vibration virtually goes. If I accelerate from a standstill up to something like 100mph on my private road, nothing there, its only when I'm in a high gear and accelerate from low revs that it's at its worst. There is also the issue with turning the wheel at roundabouts/bends/changing lanes on the motorway etc which initially made me think it was a wheel bearing, but greasing though roller bearings on the driveshaft sorted all of it out. Try putting the front wheels on the back and the back wheels on the front to see if that improves anything.
I'll give an update again tomorrow after I've had another play about and also when I've spoken to carparts direct.
Do you have a proper alfa clip on the runner boots on the driveshafts or zipties/jubilee clips or any sign of grease from it leaking previously?!
I think mine must have leaked at some point and the garage/previous owner just put on a ziptie to pass an mot or something I assume?! The problem seemed to just get worse over a month or so with no one touching the car apart from me. It must have been like it for at least 3 or 4 months and about 6-8k miles before the vibration started, so I assume what little grease was in there disappeared somehow, but there is no sign of the rubber boot actually leaking at all or any splits.