It was a perfectly acceptable answer .... it was tea time after all and between diner and a long winded answer diner was always going to win!!!
There is another way to view the question ... why would they be the same?
As I said it's all about balance of grip, my porker has different width wheels and tyres front and rear as it requires a different balance of grip front to rear to give the handling qualities desired by the designers.
Right I know that you come from a mirco background and that you've done 8th rallycross (worked out who I am yet mate???) and that both of those classes often use equal width wheels front to rear, but they also have different drive characteristics , namely fixed 4wd.
As most 1/10th off-raod cars run a one-way drive to the front they don't transfer braking force to the front wheels so all they have to do in a corner is steer until you get back on the throttle. That means that they are required to produce less grip and thus need less rubber.
The main reason though is exactly as my first response, a question of balance. Weight transfer fore-aft, side-side and diagonal also drive tyre configuration as well as the drive characteristics.
The weight distibution and weight transfer is very different between 10th and 8th off-road and again with touring cars.
When you consider than a lot of people are cutting extra rows of the front tyres as part of their standard set-ups is why whould they want them wider in the first place?
I have often seen people use 2wd fronts on their 4wd cars and looking back at my old Pred set-ups my old kiddy dry set-up was 2wd Ballistic Buggy pins fronts with 1 row off the outside edge or 4wd BB pins with 2 rows off the inside and 3 off the outside!!
Does that help more mate? We can get into chassis dynamics if you like but to do that to any great degree you'd have to let us know which car(s) your interested in.
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