1400 tire pressure rise

[toaster404]

Good solid trip 450 miles, two days, mixed rural & higher speed.  Camping gear, so 200 lbs of rider plus maybe 50 lbs, on top of the Touring models bags.  39 mpg, so that's an improvement.

But tire pressure.  I ran 37 /39 initially.  Got 5.2 / 7.8 lbs of rise.  Substantially more than I would usually tolerate.   Increased. Front at 38 is feeling hard.  Rear at 41.7 cold is right at the max, uncomfortably so.  Still getting substantially more than the 10% pressure rise I have always aimed for.  Tires run hot, not super hot, but into the "hot" range rather than the "very warm coffee" range I usually aim for.

Is this perhaps a function of the tire?  Or just what happens on a heavier bike? 

Was thinking this might play into the tire wear.  Looks like I'll need a rear tire if not both at every oil change, which seems unreasonable!!!!

Suppose I need to shop for replacements.   Bridgestone Exedra?  I don't know any cruiseroid tires except the Michelin Commander II, which isn't available. 

Any comments/suggestions?

[pete roper]

I got through three sets of rears and two fronts on our Cali Touring when we did our trip around in 2013. Keeping the pressures up above what you'd normally use if you abide by the 10% rule paid dividends but tyre life was an issue for us, especially as we were told in SLS they couldn't change our tyre's because the Cali wasn't a 'Normal' motorbike!

The last set I put on we're Bridgeies. They were great.

Pete

[toaster404]

Problem is, I can't even get up to the 10% rule!!  I was looking for 3.7 / 3.9 lb rise and I can't get close to that, being at about 5 / 7.  Never had this issue with a bike before.

I'll go to different tires, see what happens.  Looks as if I can go ahead and change the tires, oil, gear box, and rear end fluid all at the same time at 6000 miles!   I have a 1200 mile trip in August, have to wonder whether they'll be good enough to ride on for that, or whether I need to preempt that date. 

[Lcarlson]

Good solid trip 450 miles, two days, mixed rural & higher speed.  Camping gear, so 200 lbs of rider plus maybe 50 lbs, on top of the Touring models bags.  39 mpg, so that's an improvement.

But tire pressure.  I ran 37 /39 initially.  Got 5.2 / 7.8 lbs of rise.  Substantially more than I would usually tolerate.   Increased. Front at 38 is feeling hard.  Rear at 41.7 cold is right at the max, uncomfortably so.  Still getting substantially more than the 10% pressure rise I have always aimed for.  Tires run hot, not super hot, but into the "hot" range rather than the "very warm coffee" range I usually aim for.

Is this perhaps a function of the tire?  Or just what happens on a heavier bike? 

Was thinking this might play into the tire wear.  Looks like I'll need a rear tire if not both at every oil change, which seems unreasonable!!!!

Suppose I need to shop for replacements.   Bridgestone Exedra?  I don't know any cruiseroid tires except the Michelin Commander II, which isn't available. 

Any comments/suggestions?

At 6000 miles my OEM Dunlops were done. I just replaced them with Metzeler ME 880 Marathons, which have long been a "go to" mileage tire for heavy bikes. We'll see how they do....