Trailer wheels

Our technical section for all matters related to the care, maintenance and restoration of your classic boat.

Moderators: Alacrity, Rapier

Trailer wheels

Postby welshhealey » Sat Jun 03, 2017 10:53 pm

Whilst removing my trailer wheels to do the usual maintenance e.g. Bearing lubricating / replacing cracked tyres etc .. I discovered with horror, the centre hole that's fits over the hub , is much larger than the hub/bearing cap etc... therefore, the whole weight of the boat, trailer and all is only supported with the 4 studs on each wheel , this can't be right surely? :hmmm: The stress on the studs must be horrendous , and I shudder to think if one sheared with the load bearing on them whilst cruising on the motorway. :shock: .This makes me realise so far I've been very lucky that nothing has happened, and if something did, and caused an accident, would my insurance be null and void ? Plus the police investigation :shock: The trailer is a indespension hallmark and I got the gut feeling the previous owner at some stage may have put the incorrect wheels on :hmmm: Am I correct with my assumption?
User avatar
Posts: 230
Joined: Sat Feb 07, 2009 2:14 am

Re: Trailer wheels

Postby floater » Sun Jun 04, 2017 9:11 pm

Many aftermarket alloy wheels have centre bores larger than the hub boss, this enables them to fit a wider range of vehicles. You can buy sleeves to bridge the gap but many are plastic proving that they're only to aid location while fitting not as a structural mount. It's the conical seats on the nuts that provide the centreing and the friction between the wheel and hub face that provides the grip so that you're not actually riding on the studs as such.
My old car had alloys that had a centre comprised of four corner sections rather than a round hole, combined with a big chamfer it was always a pain to hold the wheel in place and insert the bolts.
User avatar
Posts: 931
Joined: Fri Feb 06, 2009 6:47 pm
Location: Southern England

Re: Trailer wheels

Postby kwoffa » Sat Mar 16, 2019 8:11 am

If i was you,i would contact Indispension with your measurments and ask them,dosnt sound right to me,re fitting..i have always used a guide pin on my car (bmw) which goes thru the wheel and into the can then just put the bolts in.
Posts: 113
Joined: Wed Nov 01, 2017 1:09 pm
Location: surrey

Re: Trailer wheels

Postby solitaire » Sat Mar 16, 2019 12:57 pm

Floater is spot on - its the taper/cone on the bolt/nut hole that centers the wheel on the hub - the majority of trailer hubs have a rough cast finish on the bearing carrier center so it
wouldn't center the wheel correctly. One point to mention is that it's important to torque the wheel nuts correctly! - It's easy to crush and split the locating cones if you overtighten the little steel wheels.
User avatar
Posts: 1007
Joined: Thu Aug 13, 2009 4:02 am
Location: Fyfield - nr Oxford

Return to The Boatshed

Who is online

Users browsing this forum: No registered users and 1 guest