Thanks for the tire ideas!  Trying to narrow things down. Tires are 14” BFG’s, maybe 8 years old, 30,000 miles. 

I’ll take a close look at the tires. 

Skip

Sent from my iPhone

> On Jun 18, 2021, at 7:39 AM, Dan Lamb <vanagongramps@gmail.com> wrote:
> 
> Maybe tire has flat spot til warms up?
> 
> Sent from my iPhone
> 
>> On Jun 17, 2021, at 9:37 PM, Dan N <dn92610@gmail.com> wrote:
>> 
>> Engine and transmission mounts?
>> 
>>>> On Thu, Jun 17, 2021 at 6:55 PM Skip Laubach <skiplaubach@gmail.com> wrote:
>>> 
>>> ‘84 Westy, new 944(?) CV’s.
>>> 
>>> I have been using the Van as a daily driver for the last week (25 min/15
>>> mile commute).  During the first 5 miles a noticeable bump, bump sound
>>> eminates from the rear of the vehicle. Not sure if it’s the CV’s, an axle
>>> bearing, or otherwise. Only occurs when the van is moving so don’t believe
>>> it’s the engine, but maybe? The bump, bump sound kind of dissipates after a
>>> bit of driving. Thought maybe others have experienced same?  Please advice
>>> and thanks!  Long time subscriber/infrequent contributor (but that may
>>> change).
>>> 
>>> Skip (northern Illinois)
>>> 
>>> Sent from my iPhone