Not at all, I wanted to get 30’s but that’s what worried me about them. With my tire and wheel setup, the rear is only 7lbs more than stock rears were.
I have 31x10x15 carnivores on KRX1000 beadlock wheels on my 2016 T4, hardly any power loss at all. now I've had my ECU reflashed and have the power back plus some more.