[SweetOldBill]

My 2005 crew cab dually's rear tire valve stems came from the factory at the same position and two different shops have said that they should be across from each other rather than the way they were done by Ford.

Anybody have an idea as to why Ford put them together??

When they were rotated last week I wasn't watching and the tire shop placed the stems 180 degrees apart and now I have a "bounce/vibration" in the rear end - - before I go and fuss and have them put back, any advice would be welcomed.

Bill

 

[FamilyRide]

Probably need to post this in a more general forum rather than 6.0 Engine. You'd probably get a lot better response.

 

[NCHornet]

The stems are suppose to be rotated from each other. However this has nothing to do with a tire being balanced, if both tires are balanced they will stay balanced wether the stems are lined up or rotated 180 degrees.

 

[civicrr]

Why are they supposed to be rotated away from each other?

@ work, the mechanics have the stems right next to each other on the fire engines & other large equipment.

Thanks.

 

[GrampyJim]

In all actuality, it has more to do with the style or bolt circle properties of the wheel. Steel wheels are much easier to deal with than situations where we have a steel inner and aluminum outer.

The steel wheels have an index hole (once upon a time, the wheel hubs had an index pin) and I prefer to line the holes up - old guy thing. There is no really "wrong way" to put these together.... what we are after is making it easy to check the pressure on the inside tire - and making it easy to find the valve stem on the inside tire.

What is important (or appears to be on newer vehicles) is the indexing of the wheels to the hub. similar to indexing a driveshaft yoke, we should endeavour to remount the wheel to ensure that things are in the same relationship as new.

There are those that will find fault with this thinking but they aren't experiencing your concern or they may have it and write it off as "the nature of the beast"... Failing to index the wheels wont always return unwanted NVH.... but indexing reduces the chances of it.

Bottom line... you went to the tire shop and had a rotation done.... My own preference would have included a balance.... you now have a vibration..... Having a balance performed at the time of rotation would have been cheaper....

 

[kehale]

Ok, now for the real reason that 05/06 F350 DRW's have them in the same hole.....

The aluminum wheel has 5 holes. The steel has 4. You can't get them lined up 180 degrees apart because there's no hole there in the outer wheel! Doh!

/ubbthreads/images/graemlins/eek.gif

 

[SweetOldBill]

Thanks for all the comments.

Tire shop returned the wheels to their same relative position - valve stems "together". Problem solved.

It almost seems like the factory balanced to dually's together - - I really don't think they did, but it is an interesting thought.......

Bill