I have somewhere around 700 cars in the garage.
Several doubles on cars I really like for the rivals tab for different class’s.
What tip or trick am I missing or not seeing that
would allow me to reduce my car count and
still make it easy to have the same car for different class’s without
have to go back to the garage every time and switch out upgrades?
T.I.A.
Steve
You don’t have to go back to the garage to load a tune. Go to the “Tune” option in the Menu (under Cars) and look at the bottom of the screen. There should be a “Setup” option to load new Tunes; wherever you are on the map.
So, if I’m understanding this correctly.
I can ‘set-up’ a car for c-class and then save that under a tune.
do a different ‘set-up’ on that same car and save it also as a tune.
All I would have to do is save it & name it, such as Dclass, Bclass.
Is that what you are describing?
Yep, That’s it! I have multiple tunes for each class based on Summer and Winter too… Works great!
Interesting. different class and season…
Thank You…
DarkWolf has it right. I fell into the trap you are in ages ago and was keeping several cars of the same make with different tunes.
It is far easier to swap tunes and also better to keep your garage at a reasonable limit.
For rivals I’ll often have ~3+ tunes saved for one car. I think I had close to ten saved for my Mini at one point, eventually went and cleaned them out though.
Having different tunes for seasons/class is good. But for rivals I find it more useful to just name them after the track their for, or what distinguishes it from the last version of that tune (eg “no aero” or “less brakes”)
Keeping track of tunes is tough, especially when testing little tweaks tryna fine hundredths of a second. I think having any semblance of a system helps w/ going fast though, just gotta figure out what works for you.
Or just name all your tunes “Yyyyyyy” like I used to do!
Can’t you only have 500 tunes saved though or is that only if you have used tunes others have created? I’m constantly running into problems with the tune limit, so apply a tune to a car and then delete it from my saved tunes. I therefore do have several of the same car, otherwise I’d have to go and find a new tune each time I wanted to change class.
I believe you are correct about the 500-tune limit, but I’m not a big car collector so I only have about 250 cars in my garage and of those, I probably only use 50.
My old muscle cars have 3 tunes each; B, A, and S1 Class. That’s because they’re all pretty good in any of those classes. For my modern vehicles I usually have 2 tunes, Race & Rally. “Race” indicates Race Tires and Suspension while “Rally” indicates Snow/Dirt Tires and a Rally Suspension. (Summer/Winter)
Rally tires and suspension on a Ferrari Pista may seem a bit odd, but it really helps navigate those pesky Forzathon Live Routes. 
Is there a way to make this work for FFA, I have multiples of some cars as you never know what will be thrown at you.
Unfortunately not. For any multiplayer / single player where you are on the car select screen you can only pick cars in that class so for example A Class. Also you cant load tunes from the Race Menu either so even if you are in A Class and want a different tune that is A Class you still cant select it.
So saving tunes is a good thing as you can manually select different Classes, different setups quickly but you can only change these while in free roam (Pause Menu) or from within the festival/house. So for online you need to set up your car selection before you enter any online mode so theres a car you like for all different classes and seasons etc. So you may still want duplicates of certain cars.
Yeah. Online is a real bloody pain. You get 40s to pick a car; you need to quickly guage the tracks to figure out if (a) its winter is there enough snow to use a snow optimised car, (b) if its autumn or spring are the conditions on eough races wet enough to force a wet conditions optimized car, (c) are the tracks characterised by short straights and corners, or long curves, (d) are the offroad tracks offroad enough for a buggy because any amount of tar on even one track will screw you over, and (e) theres a fine balance between tracks where certain offroad vehicles do well on, and tracks where the jumps just tend to throw them out of bounds.
In all of this Forza just shows me my cars. It does not show me the last tune I loaded on the car. It does not - with the occasional exception of winter tyres - show me the suspension or tyre type.
I have taken to painting my cars to match the race type I have tuned them for. Green for cross-country and so on.