Really look at the tire specs for each brand/tire you are considering. I was running 285/35/19 Toyo R888r's on my 10" Apex EC7 wheels last season. I corded them in the fall and had a set on back order for weeks. I came across a set of the same tire in 275/35/19. The overall width on the same wheels was virtually identical. The published data also lists the tread width as being a 1/10" wider on the 275. I am just having fun at the track and running non competitive classes, but I have not noticed a measurable difference in lap times.
Something else to consider is the ECF in 295/30/19 shows a sectional width of 12.1" and a tread width of only 10.5", so it will always looked bulged while the contact patch will be similar to a smaller sized tire from other manufacturers.
Something else to consider is the ECF in 295/30/19 shows a sectional width of 12.1" and a tread width of only 10.5", so it will always looked bulged while the contact patch will be similar to a smaller sized tire from other manufacturers.