Recently I removed my front 275-40-18 NITTO NT-555's (on 18 x 10 rims), and temp stored em away.
The rears were 285-40-18's (also on 18 x 10 rims). I moved the rears to the front. Front is good.
Then bought new 305-35-19 MPSS's...and mounted em to new 19 x 10 rims..... and installed em on the rears.
The section width of the MPSS 305-35-19 ( when used on a wider 11" rim) is listed as 12.31".
Section width is actual side wall to side wall dimension. 12.31" x 25.4mm = 312.75mm... IF used on a 11" wide rim. On a smaller 10" wide rim, the section width drops to aprx 302.75mm.
Actual tread width for the MPSS 305-35-19 is listed as 10.7". Well, on a smaller 10" wide rim, it's no where near 10.7". It's barely 9" !! And that's with aprx 900 lbs on each rear..and also with just 30 psi. (this is the actual contact patch width on the ground).
(a 275-40-18 on a 18 x10 rim is 9.75". And a 285-40-18, also on a 18 x 10 rim... is almost 10"..that's contact patch on the ground.
I shoulda listened to Gabe. Rears stick..."ok", being they are brand new MPSS, and just 30 psi.
Moral of this failed experiment is to use at least the...'measuring width' the tire maker lists..and preferably a 1/2" wider than that.
You woulda thought I had learned from the last fiasco... using a 275-40-18 on a 9" rim...(these were on the fronts, 2 summer's ago). Sluggish, and un-responsive, underwhelmed to say the least. The 275-40-18's were swapped onto wider 10" wide rims..then all was well, worked superb on the front, being stretched 1/2". (I had gone from 1/2" under... 'measuring width'.. to 1/2" over measuring width.) I should listened to Norm on that one.
Bare min for a 305-35-19, IMO, is 11". Even a 10.5" wide rim is a wasted effort.
On a 10" wide rim, they are a full 1" narrower than measuring width. The MPSS rolls off on each side, at an angle. This gets accentuated even more when using a narrower rim. I have zero sidewall bulge, tires look good, rims look good, fits good..with it's 48mm offset, but just not enough actual rubber on the road. Another high level experiment gone amok....more Fubar on my part.
The rears were 285-40-18's (also on 18 x 10 rims). I moved the rears to the front. Front is good.
Then bought new 305-35-19 MPSS's...and mounted em to new 19 x 10 rims..... and installed em on the rears.
The section width of the MPSS 305-35-19 ( when used on a wider 11" rim) is listed as 12.31".
Section width is actual side wall to side wall dimension. 12.31" x 25.4mm = 312.75mm... IF used on a 11" wide rim. On a smaller 10" wide rim, the section width drops to aprx 302.75mm.
Actual tread width for the MPSS 305-35-19 is listed as 10.7". Well, on a smaller 10" wide rim, it's no where near 10.7". It's barely 9" !! And that's with aprx 900 lbs on each rear..and also with just 30 psi. (this is the actual contact patch width on the ground).
(a 275-40-18 on a 18 x10 rim is 9.75". And a 285-40-18, also on a 18 x 10 rim... is almost 10"..that's contact patch on the ground.
I shoulda listened to Gabe. Rears stick..."ok", being they are brand new MPSS, and just 30 psi.
Moral of this failed experiment is to use at least the...'measuring width' the tire maker lists..and preferably a 1/2" wider than that.
You woulda thought I had learned from the last fiasco... using a 275-40-18 on a 9" rim...(these were on the fronts, 2 summer's ago). Sluggish, and un-responsive, underwhelmed to say the least. The 275-40-18's were swapped onto wider 10" wide rims..then all was well, worked superb on the front, being stretched 1/2". (I had gone from 1/2" under... 'measuring width'.. to 1/2" over measuring width.) I should listened to Norm on that one.
Bare min for a 305-35-19, IMO, is 11". Even a 10.5" wide rim is a wasted effort.
On a 10" wide rim, they are a full 1" narrower than measuring width. The MPSS rolls off on each side, at an angle. This gets accentuated even more when using a narrower rim. I have zero sidewall bulge, tires look good, rims look good, fits good..with it's 48mm offset, but just not enough actual rubber on the road. Another high level experiment gone amok....more Fubar on my part.