I sent this to Chris@DTD after I purchased the wheels and tires from him, and he asked me to post it here. Also, some other people asked for detailed pictures, so I figured I'd just throw it all together in one thread. Anyways:



Just for future reference, there are absolutely no fitment issues with these wheels. With my tanabe GF-210 springs (1" drop in the front, 1.2" in the rear) there is no rubbing of the tires with the wheels turned to lock in either direction. Visually, I think the +27 offset is just about perfect as well. They stick out just slightly more than the OEM 17" wheels. With my significant negative camber (~3 degrees) the tires are roughly equal with the top of the fender, and at the bottom stick about about 3/4 of an inch. It looks very agressive, definitely all business.

The tires, they are incredible. Even at 35 PSI (I've heard a lot of people run them around 40) the turn-in and steering response is much, much better than either the OEM bridgestones, which had a pretty stiff sidewall as well, or my goodyear F1 eagle DS-G3s. Turn-in can be very aggressive without upsetting the tire. The steering force is actually lighter than my goodyears as well, despite an additional 50mm of tread width. My one-wheel burnout corner exits have been drastically reduced, and the sheer amount of grip for cornering is staggering. The car feels planted and stable at cornering loads that would easily break loose my goodyears or the OEM tires. As far as how running 275s all around has changed the balance of the car, I'm not sure yet, as I haven't even managed to break one end of the car loose. Overall, they are definitely a worthy successor to the RT-215s


Am I pleased with my purchase? HELL YES! I'll give you another report when I finally get out on an autocross course in february.

Also, just for reference these ARE A-Tech Erasers. The wheels are actually stamped with "A-Tech" on the rim. A-tech sells those wheels for 26,000 Y in japan, which is roughly $220. So $130 a piece from DTD seems like a decent deal, especially if you just need somethign to race on.

The following pictures were taken while I was parked on the hill outside my house, so the front and rear fender gaps are a little off. They are more even when the car is on level ground. Also, keep in mind I have some pretty extreme negative camber which affects the stance of the tires.













Whoever it was that wanted a shot from the inside of the tire, sorry, I have no idea how to get that!

 

Congratz on the wheels and tires, they look great. I have the MB Competitions same size and offset (but different spoke pattern) and use them for the track. Price is hard to beat, plus they look awesome.

 

Yeah, the definitely look all business. I wish I could leave them on the car all the time!

 

These look good. Thanks for posting this information.

Out of curiosity, when you adjust the camber on the front, does the bottom of the tire come out or does the top of the tire go in? I am currently looking at a +22 17x9 rim with this size tire and am concerned about the 5mm difference.

Chris

 

I like the meaty look of tires, very aggressive. I'm running on RT615 on the street so it shouldnt be all that bad to get decent mileage out of them if the nut behind the wheel doenst get too loose. I've ran R-compounds on teh street, the Dunlop SP SuperSport Race tires with a 60 treadwear rating, and I never had problems with them as far as longevity is concernced. Lasted me the whole year of 2005 both on the street and on trackdays and a few drift sessions.

 

+1 - Another benefit of this wheel is the sheer number or tire choices out there both street and r-compound. Not to mention less $ compared to running 18's. Only wish I ran 275 all around instead of just the rears. Oh well, will do it on the next set of 615's.

 

The problem I have is my alignment. I like having that negative camber in there, but it eats rear tires!! I'm almost through with a set of goodyear DS-G3s, and they've only been on the car for 10k miles, including three or four autocrosses. I've been driving around on the RT615s now for three days, I just can't bring myself to take them off. My current excuse is "I'm going to rotate the rear street tires while I have them off" but I haven't yet.

 

to avoid the one wheel burnouts, upgrade to a lsd or if you have the stock one, upgrade to a better one

 

werd

 

I know, but the list is long, and there are some other things that I need to do before the LSD comes along. I plan on just putting in a stock LSD, as my power output isn't gonna change too much, and I don't want to deal with the annoyance of having a clutch-plate LSD

 

Awesome! Glad to see that setup is working out for you.

I'm running 17x9 +27 MB Motorsports Competitions on 275/40/17 Avon Tech-R r-compounds. In Japan they're called the A-Tech Finalspeed. Only difference is the center cap and stickers. So basically a very similar setup to you. Works great on my G35c as well