Meguiar is all I've ever used on my vehicles and RV's. IMHO the best products one can use as it contains water-resistant polymers combined with antiozonant additive that prolongs tire shine looking blacker, while preventing cracking, browning, and premature aging.
As most of you know, tire companies build their tires with anti-ozonants build into them. These components are designed to leach to the surface when the tire is under load and in motion in order to protect the rubber from the ravages of ozone exposure. It's the ozone that is the main threat to tires, not UV. Ozone levels can vary around the world, but it tends to be greater in and around large industrial cities and at higher elevations. As these anti-ozonants come to the surface and are exposed to oxygen, they turn brown; and this browning of the sidewalls is known as "blooming".
It's a naturally occurring situation ("naturally occurring" as in "it's designed into the tire") and not caused by anything you've applied to the tire. Each tire company has their own recipe not only for the tires but the overall anti-ozonant blend as well. Certain key ingredients are common to most, but it's how their combined, in what ratios, etc that will determine the level of blooming on a given tire.
Some petroleum solvents are used in cleaning solutions that will strip that brown off the side of a tire in no time. Some of those might be a bit more harsh than what should be used. Some might penetrate a bit deeper into the sidewall and strip out the anti-ozonants that are supposed to be protecting that outer reach of the side wall.
In my tire experience Michelin is the worst for tire blooming (not necessarily bad nor good) and does not approve of any tire dressing other than their own and if not available, you must use dressings that are Water Based and do not contain Petroleum or Silicone.
Meguiar's essentially has two tire dressings with Petroleum distillates; Hot Shine and Endurance aerosol sprays. But here's the interesting detail with those - the Petroleum distillates are basically the stuff that makes an aerosol an aerosol. They're the propellant that moves the ingredients out of the can and onto your tire. They are literally gone in a matter of seconds; they don't stick around on the side wall of the tire.
As for the silicone, When applied to the sidewall of a tire, they actually prevent to some degree the ability of ozone to penetrate to the rubber. That means the silicone can actually help protect the tire.
To the best of my knowledge, experience and research the problem of cracking or blooming over time is not caused by or accelerated by any Meguiar product. Regardless if using petroleum or water based it is important to start with a clean tire before applying.
Meguiar NXT Generation Tech Protectant
NXT Generation Insane Shine Tire Coating
Hot Shine High Gloss Tire Coating
Endurance Tire Dressing
If in doubt then can use a water-based product but won't last as long; less durability.
Examples:
M4016 Vinyl & Rubber Cleaner/Conditioner
D170 HyperDressing
303 Aerospace Protectant (I've used on my RV tires when that's all I have in the shop)
I've been using Meguiar products for many years w/o issue and given the company has been around since 1901 I tend to trust them.
2009 Carriage Cameo 35SB3, 12.4K dry, 36' Fiver
2012 F350 6.7L 4x4 Lariat Ultimate FX4, Chrome package, Nav, SRW, CC, LB, 11.5K GVWR, 3.55 ELA, 20" wheels, Toyo AT II, Mor/ryde pin box, Husky 26K hitch
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