There is advertised size and then there is mounted and on the ground size.
Notoriously, BFG KO2 315's aren't even 34" when mounted and on the ground. The "mold" may have intended what the engineers are reporting to marketing for sizes, but in reality, they are not the same thing.
Show me a set of Wildpeaks mounted and on the ground that are 32" let alone 32.4" and I'll eat my words. And by 32" I mean not inflated to 90psi!
Here is part of a chart I developed 2 years ago for a project on a Jeep site. These are the "advertised" specs for all of what are commercially accepted 33" tires. The idea of 33" or 35" tires comes from a series of calculations by a manufacturer with the acceptance of inches/percentages/millimeters calculations all being equal as calculable around industry standards.
How a tire diameter is calculated:
https://www.tirerack.com/tires/tiret...jsp?techid=202
Tire Brand - 285/70/17 Size Type Diameter Width
BFGoodrich All Terrain T/A KO2 285/70/17 A/T 32.7 11.5
BFGoodrich All Terrain T/A KO2 285/70/17 A/T 32.7 11.5
BFGoodrich All Terrain T/A KM2 285/70/17 A/T 33 11.5
Nitto Terra Grappler G2 285/70/17 P 32.6 11.5
Nitto Terra Grappler G2 285/70/17 A/T 32.76 11.5
Nitto Terra Grappler 285/70/17 A/T 32.76 11.5
Nitto Dura Grappler 285/70/17 H 32.79 11.49
Nitto Dune Grappler 285/70/17 A/T 32.64 11.73
Nitto Ridge Grappler 285/70/17 A/T 32.76 11.5
Nitto Ridge Grappler 285/70/17 A/T 32.76 11.5
Nitto Exo Grappler 285/70/17 A/T 32.99 11.5
Nitto Trail Grappler M/T 285/70/17 M/T 32.99 11.5
Nitto Trail Grappler M/T 285/70/17 M/T 33.15 11.81
Nitto Trail Grappler M/T
Yokohama Geolander A/T S 285/70/17 A/T 33.1 11.5
Yokohama Geolander A/T G015 285/70/17 A/T 32.9 11.3
Yokohama Geolander A/T G015 285/70/17 P 32.8 11.2
Yokohama Geolander M/T Plus 285/70/17 M/T 32.9 8.9
Yokohama Geolander M/T G003 285/70/17 M/T 32.9 11.6
Falken Wildpeak A/T3W 285/70/17 A/T 33 11.6
Falken Wildpeak A/T3W 285/70/17 P 32.8 11.3
Falken Wildpeak M/T 285/70/17 M/T 32.9 11.4
Firestone Destination Special Edition 285/70/17 P 32.8 11.5
Firestone Destination A/T 285/70/17 A/T 32.8 11.5
Firestone Destination A/T 285/70/17 P 32.8 11.5
Firestone Transforce AT2 285/70/17 A/T 32.8 11.5
Federal Couragia M/T 285/70/17 M/T 33.1 11.3
Atturo Trail Blade X/T 285/70/17 M/T 32.7 11.5
Sumimoto Encounter AT 285/70/17 A/T 32.8 12
Sumimoto Encounter AT 285/70/17 P 32.9 11.7
Kuhmo Road Ventuer MT51 285/70/17 M/T NA NA
Kuhmo Venture AT KL78 285/70/17 M/T 32.7 11.5
Kuhmo Road Ventuer AT51 285/70/17 A/T 32.7 11.5
Mastercraft Courser AXT 285/70/17 A/T 32.76 11.7
Mastercraft Courser AXT 285/70/17 P 32.76 11.4
Mastercraft Courser CXT 285/70/1\ A/T 33.07 11.5
Mastercraft Courser MXT 285/70/17 M/T 32.91 11.5
Continental T C A/T 285/70/17 A/T 32.7 11.5
Milestar Patagonia M/T 285/70/17 M/T 32.9 11.5
Milestar Patagonia A/T 285/70/17 A/T 32.8 11.5
Milestar Grantland 285/70/65 A/T 32.8 11.5
Cooper Discover AT3 285/70/17 A/T 32.83 11.4
Cooper Discover ATP 285/70/17 A/T 32.83 11.4
Cooper Discover AT3 285/70/17 P 32.76 11.5
Cooper Discover A/TW 285/70/17 A/T 32.83 11.4
Cooper Discover A/TW 285/70/17 P 32.76 11.5
Cooper Discover STT Pro 285/70/17 M/T 33.3 11.5
Cooper Discover MTP 285/70/17 M/T 32.91 11.5
Cooper Discover ST MAXX 285/70/17 A/T 32.99 11.5
Cooper Zeon LTZ 285/70/17 A/T 32.71 11.35
Goodyear Wrangler TrailRunner A/T 285/70/17 A/T 33 11.5
Goodyear Wrangler DuraTrac 285/70/17 M/T 33 11.5
Goodyear All-Terrain Adventure Kevlar 285/70/17 A/T 32.8 11.5
Goodyear Wrangler MT/R Kevlar 285/70/17 M/T 33 11.5
Kenda Klever A/T 285/70/17 A/T 32.8 11.5