Metzler marathon 888 air pressure
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2nd Gear
Joined: Mar 2018
Posts: 6
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From: Bronx,ny
Metzler marathon 888 air pressure
I have both metzler marathon 888 on front and rear of my 17 ultra limited custom. 120/70/21 on front and 200/50/18 on rear. I've been running them at factory specs psi but believe those are for dunlop. I'm 240lbs and do ride 2 up and luggage about 50% of the time. I've noticed at higher speeds 70+ I get a wobble in rear. What would you folks recommend me to have my psi at? Had the bike looked over from harley dealer and everything is tight and in line. I'm almost positive it's my tire pressure.
Club Member
Joined: Jun 2007
Posts: 45,429
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From: Bedford UK
The Metzeler website should give you pressures for stock tyres, including your rear. I'm a firm believer that they provide a starting point. If you are heavy, or very light, make adjustments to suit, say a couple of psi at a time. When we use non-stock tyre sizes it is our responsibility to get things like this right! So try a little experimentation to see if you can improve things.
Stage I
Joined: Apr 2024
Posts: 1
Likes: 0
From: CA
Wobble on 200/50/18
I have both metzler marathon 888 on front and rear of my 17 ultra limited custom. 120/70/21 on front and 200/50/18 on rear. I've been running them at factory specs psi but believe those are for dunlop. I'm 240lbs and do ride 2 up and luggage about 50% of the time. I've noticed at higher speeds 70+ I get a wobble in rear. What would you folks recommend me to have my psi at? Had the bike looked over from harley dealer and everything is tight and in line. I'm almost positive it's my tire pressure.
Grand HDF Member
Joined: Jun 2005
Posts: 3,711
Likes: 3,438
From: SW WA.
I'm about 250 with gear on and ride two up loaded heavy with a tourpac and luggage rack.
I'm running 36 front and 40 rear with Metz 888s but my bike is an Eletcra Standard so the rear tire is a 180/65 R16
Haven't had an serious wobbles,last year I upgraded to Ohlins remote res rear shocks and an Ohlins front fork kit which greatly improved both the ride quality and the overall handling.
It was pricey yes but I'd do it again,something to think about.
I'm also looking at getting the Truetrac stabilizer system for even more improved handling.
I'm running 36 front and 40 rear with Metz 888s but my bike is an Eletcra Standard so the rear tire is a 180/65 R16
Haven't had an serious wobbles,last year I upgraded to Ohlins remote res rear shocks and an Ohlins front fork kit which greatly improved both the ride quality and the overall handling.
It was pricey yes but I'd do it again,something to think about.
I'm also looking at getting the Truetrac stabilizer system for even more improved handling.
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