Is the Active Aero Worth Keeping?

GhostRunnerTundra · 2026-06-11T01:05:08+00:00

I love my 35s and I'd put them on again in a heartbeat. But there's a handful of things I wish someone had told me before I did it, so here's the honest version for anyone planning on daily driving theirs. First, don't go as aggressive with offset as you think on the Tundra. I'm running 0 offset without quite enough lift (2in front and 1in rear), and I've had to trim, then trim again, and I probably still need to trim more. If I did it over I'd either go a little less aggressive on the offset or do a real suspension replacement like the OME MT64s to get it sitting where it needs to be. If you go the cheap route, just be ready for some rub. Now the good part. The small rim, big tire combo soaks up an absolute ton of the road when you're daily driving. It has been so much more plush since I put them on, and honestly that alone is the reason I'd do it again. Here's the big warning though: do not listen to the dealership or the tire shop about your speedometer. I got two speeding tickets in quick succession. One of them I had cruise control set to 78 in a 70 and figured I was totally fine. Officer said he had me at 88. Now I'm fighting a fix it ticket and have to go get it corrected in person. Either get your speedo recalibrated or at minimum understand that it's going to be reading pretty far off. Last point, power. I honestly didn't feel like I lost much at all. It still has plenty of get up and go and is a riot off-road. MPG is harder to say since I now know my speed and mileage readings are off. If I assume the same rate of difference I'm seeing in speed, I probably lost 3 or 4 MPG, but I also went with the Falken Wildpeak AT, which I'm sure helps a lot on that front. Bottom line, I think the pros outweigh the cons, especially if you off-road frequently. But a lot of this is preference, so go in knowing the trade-offs. Anyone else dealt with the speedo being this far off after going up in tire size? Curious if recalibrating actually got people back to accurate or if it's always a little off.

TrailJustin

Member

Dec 17, 2025

My truck is aging like a fine wine. With that being said, I constantly see jokes about the active aero. People say it doesn’t do anything. They say it throws a check engine light when it breaks. There’s even a CBI delete kit for it:

Tundra Front Active Spoiler Delete Module | CBI Offroad Fab

Get trail-ready with CBI Offroad's Tundra Front Active Spoiler Delete Module | 2022-2025. Engineered to be rugged, trail-tested, and made in the USA.

cbioffroadfab.com

In the Toyota YouTube video on how to put it into service mode, it looks fairly useful. It comes down at around 37 mph and supposedly helps with fuel economy and stability. Now, the OEM trust in me wants to believe Toyota knows exactly what they are doing and that everything they say is true… but I have some doubts.

Video:

So my question to you guys is this: do you have real-world data? Like actual MPG data or some sort of stability data showing the active aero does anything meaningful? I’m a data person, so an opinion about what you think is ok, but I would really like numbers.

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