View Single Post
Old 12-01-2017, 03:11 AM   #4 (permalink)
freebeard
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 29,318
Thanks: 8,339
Thanked 9,101 Times in 7,517 Posts
Are you thinking of low-sidewall tires with side-by-side tubes? The run-flat tires I've seen had concentric inner and outer tubes.

The ultimate run-flat wheel:

bgr.com:NASA’s new titanium tires can never get a flat

It says titanium because that cool, but it's really a nickel-titanium alloy “shape memory alloy”.
__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

___________________
.
.
Impossible is just something we haven't done yet. -- Langley Outdoors Academy
  Reply With Quote