I have had my wheels balanced twice now but it's not making any difference, at certain speeds there's still an element of wrongness there, it's not totally smooth on the motorway, as it should be and used to be.

Many moons ago I bought Britpart discs for the TD6 and instantly regretted it as they were poorly made and caused vibrations, just like if the wheels were out of balance. Once I forked out for genuine discs, all was well again.

I recently replaced all the discs and pads on the 5.0 with TRW, they stop the car ok but I am starting to wonder if I have the same old problem, and whether life would be smooth again with genuine items. As there's only the wheels and discs rotating, it has to be one or the other.

I saw a thread recently about repeated wheel balancing and the OP said he had 2 alloys cold rolled, I don't think this is my issue.

Is wheel balancing such a hard thing to do? Is it possible to have the discs checked or not? Discovery 4 HSE
1998 110 TUM HS FFR Hard Top XD WOLF
1982 Series 3 Hard Top

*Gone:L462 D5 HSE LUX, L663 Defender 110 HSE, Discovery 3 HSE, 2014MY Range Rover Sport 5.0 Supercharged AB Dynamic; L405 Exec Vogue SE 4.4, 5.0 Supercharged Autobiography, Defender TDCi XS CSW, Defender TD5 HT, Vogue SE TDV8, Vogue TD6, RRSport SC 4.2V8, Classic 3.9 Vogue Auto, Land Rover Series 3 SWB

do you know anybody you could swap wheels with? haver you tried putting the spare on each corner and testing etc.?? are your wheel nuts all tight?
Many moons ago, bought an RR classic with a wrong feeling pedal, i thought disc was warped, it turned out that after removing front discs, there seemed to be a small amount of grit/rust behing one seating face against the hub. i cleaned it and it was much better, however in that time wondering what the problem was, i had worn the discs towards how the hub 'dust' was offering them to the calipers, so i had caused them to become warped, and even though i had remved the problem, i then still had warped/worn discs. changed them, and presto. fixed.
My problem was only really noticable on braking, light and heavy. if yours is a problem on cruise, i would still think of a wheel.

You might be able to get the wheels balanced on the car, I'm not too sure what is involved. That way any imbalance in the drive chain will also be dealt with. Stan is probably the best person to answer this  Yesterday I couldn't spell Engineer... Today I are one!
Inventor of the 'Guide-o-Matic automatic wheel alignment tool'
Former long term L322 owner, Up/Down graded to a Classic Tractor!

Check the ball joints as well as these can cause a wobble if worn. There has been discussion about the possibility of hubs being the cause of wobble as well. Worth putting a gauge on the disc and seing if it runs true. There is nothing that can't be fixed with a hammer😜😜
FFRR 4.4 SDV8 Autobiography Santorini Black.
KIA E-Niro 4+
2021 Discovery 5 D300 MHEV commercial

Have a read of my recent post on this subject and my experiences.......

[url]http://www.fullfatrr.com/forum/topic30683.html

Cheers, Jon. [/url]

The friends taking care of my SC had a vibration at higher speed caused by low tyre pressure. All gone now.

I have a hard time imaging out of balance discs but it can happen for sure. Especially with " cheaper " versions.

Remember what Craig said about tyre " rotation " to a different corner and subsequent tyre noise. So I suggest to only use the spare ifyou are trying that approach.

Bottom line I would put OEM on, sorry. MY 2010 5.0 SC Galway green and sand interior!!
Have the Faultmate MSV2 Extreme to be tinkering with the settings etc. !!

It's not a binding brake by any chance?
You could check for a hot disc after the vibration has occurred.

^ Could be, but I don't think the calipers on the 5.0 suffer the same as those on the 4.2 and tdv8. They changed the rears for different bigger versions on the latter cars. There is nothing that can't be fixed with a hammer😜😜
FFRR 4.4 SDV8 Autobiography Santorini Black.
KIA E-Niro 4+
2021 Discovery 5 D300 MHEV commercial

Dare I suggest alignment... Are tyres wearing evenly worth checking inner and outer edges of tyres as this could be causing effect you describe. Present :2008 TDV8 HSE
Gone Audi A5 2.7TDI
Gone Discovery 3 HSE
Gone Mercedes CLK
Gone Range Rover 2.5 DSE

typically wheel balancing problems arise around the 35mph ,50/55mph and 75mph speeds...

causes could be tyres out of balance,
wheel alignment out
worn track rods and/or bushes
wheel bearings

and because of the large surface area on the disc pads, they could be vibrating on slightly warped discs..

its all a process of elimination but from experience steering wheel vibrations can be solved by a proper and accurate tyre balance..


@paul, unfortunately an on car balance isnt an option on the FF because of the diffs..  ... - .- -.




Y. O. L. O.
.

Stan I did say that I wasn't too sure

So if the vibration started when the discs were changed, that is the most likely cause, it might be worth talking to a performance engine builder, who balances engines. They should be able to check and rectify any imbalance, after all they do it for flywheels  Yesterday I couldn't spell Engineer... Today I are one!
Inventor of the 'Guide-o-Matic automatic wheel alignment tool'
Former long term L322 owner, Up/Down graded to a Classic Tractor!

The link in my post above didn't work - i'll try again, or search for a post titled "Vibration & Wheel Wobble - RESULT and LESSON LEARNT". -

[url]http://www.fullfatrr.com/forum/topic30683.html [/url]

Any rotating mass will generate vibration unless it is perfectly balanced. The amount of imbalance generated by a brake disc will be negligible compared to that of a road wheel, and largely damped out by the much greater mass of a road wheel. It is quite feasible that having fitted new brake discs the wheels were refitted in a position which has changed the phase of the imbalance and the result is a change in vibration that you can now feel.

What you describe is exactly what I had, and I would suggest eliminating road wheel imbalance as cause before trying anything else - and that means getting wheels balanced on a Hunter GSP9700 Road Force balance & measurement machine as specified by Land Rover and detailed in the above post.

Cheers, Jon.