Look, imagine in Formula 1 they'd allow racers to use machine guns. I'd find it kind of absurd if the rules said: "OK, you can shoot everyone, but ramming is a no-no." The guns in IV are used as offensive power, to kill the driver or pop the tires so you would capitalize on their misfortune. They're only used as a defensive power if you're in front and someone is right behind you, but then blocking could also be considered a defensive power cause you're defending your position. If you let us use guns in that mode, then let us ram as well.
it gives off a bad impression. a server that doesn't allow ramming & blocking, but race mades where it's allowed. confused.com
Some servers have happy hours when certain rules are omitted for a short time. Seeing as IV races don't come on often, IV races are Adrenaline Xs happy hours, or rather minutes.
Consider this, why is ramming and blocking bad? The main reasons are that it screws up another persons race and that its a nuisance for a person to get rammed or blocked. But having your tires popped out and losing control, or even worse, getting killed, is also a big nuisance and it screws up your race. By that case, the IV mode should get removed then. But you would say its a DM race mode and its supposed to be like that. Well, if its a DM, its kill-or-be-killed, there should be no rules, aside from hacks and bug abusing.