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No rubbing and no modification to my suspension. I think it fills out the wheel well nicely and I wouldn't go bigger. (y)

LT 275/70R18 They are KO3's. No rub and they have a nice ride and I really don't notice extra noise.

I like the color of yours btw!!

“Not proven optimal” doesn’t equal “improved by changing it.”

You don’t have to prove the baseline works—that’s already been done. You do have to prove your change improves it.

Asking for evidence isn’t the problem—being unable to provide it is.

When the data runs out, the memes show up. Still haven’t seen anything that demonstrates thicker oil improves wear or durability—just jokes and assumptions.

Not really—I didn’t agree with your conclusion, just the existence of tradeoffs. You’re still making a leap you haven’t supported. Yes, regulations like CAFE can influence viscosity targets. That’s not controversial. What you haven’t shown is that those targets come at the expense of...

You’re right about one thing—there are tradeoffs. That’s exactly why this isn’t as simple as “thicker = better.” What you’re still not showing is any mechanical evidence that moving to a thicker oil actually improves outcomes in this engine. Not theory—actual controlled data. You keep saying...

Got it—so we’ve moved from “data” to just calling engineers jackasses. Pointing at plastic oil pans and rattling hoods has nothing to do with oil viscosity requirements. That’s just deflection. You still haven’t shown anything that outweighs manufacturer-level testing—just opinions and...

That argument sounds good on the surface, but it doesn’t actually prove what you think it does. Specs aren’t set by geography alone. They’re driven by emissions requirements, fuel economy regulations, fuel quality, and maintenance assumptions. The U.S. spec leans heavily on fuel economy and...

So now the engineers who designed, tested, and validated the engine are just “bean counters”… but a few random forum posts and oil analyses are the gold standard? That’s backwards. Toyota didn’t land on 0W-20 by guessing or chasing spreadsheets—they validated it through full-system testing...

For him calling Toyota’s engineers “bean counters” while leaning on random forum oil analyses and pressure screenshots is a pretty low bar for evidence. Matching pressure doesn’t equal protection, and a few UOAs don’t prove anything beyond isolated results. That’s not science—that’s...

Matching oil pressure doesn’t prove the oil is “better” or even equivalent—it just shows the system can compensate. Toyota’s spec isn’t based on hitting a pressure number. It’s based on full-engine validation—clearances, flow, wear, startup protection, and long-term durability across thousands...

You’re still arguing a different point than I am. I never said manufacturers are infallible. Obviously they are not. Your examples from VW, GM, and diesel specs all show that manufacturers can get things wrong and later revise their recommendations. What I said is much narrower: until Toyota...

Those are good examples—but they actually support my point, not yours. In both cases (VW 502 and CK-4), the issues were identified through large-scale, real-world failures and then addressed by the manufacturers or industry with updated specifications. That’s the system working—problems show...

No

I didn’t reject oil analysis—I rejected it as conclusive proof. There’s a difference. It shows trends, not controlled outcomes. That’s why I default to the manufacturer spec—because that is based on controlled testing. Probably right—without controlled data, we’re just repeating opinions...

That actually proves my point. If oil analysis “has too many variables,” then it can’t be used to claim thicker oil is better either—so that argument cancels itself out. And yes, it’s the same engine, but Toyota still sets different viscosity specs by market. That doesn’t mean every option...

I didn’t refute proof—I pointed out that you haven’t actually provided any. Listing alternative viscosities from other markets isn’t proof of superiority. It just shows Toyota allows different ranges depending on region. If you’re claiming thicker is better, the burden is on you to show...