Problems with 2005 Hyundai Tiburon TIRES

Bought two new front tires for tiburon. nexen n5000 215/45r17 on 10/15/2013. within three weeks the front right tire developed a flat on 11/7/13 ie within three weeks. never happened with any tires. why this one? *tr

Purchased 4 new pirelli p4 205/55r16 91h tires on 11/1/10 from nashua wholesale tire in nashua nh. after 15k miles two of the tires are almost bald. these tires carry a 65k mile warranty. returned to dealer seeking replacements. deal was rude and said pirelli will not cover it, they do not even make that tire anymore. they will sell me 2 new p6 tires for full price. contacted the president and vice president of pirelli, [xxx], and[xxx] asking for two new p4 replacements. neither responded. information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6). *tr

Cooper zeon 2xs 215/45 r17 sides are collapsing. 3 of 4 tires purchased just one year ago. *tr

I purchased a new 2005 hyundai tiburon on march 09, 2005 in cincinnati, ohio. at about 9,000 miles i noticed the car was behaving differently. by 16,000 miles even i who am not mechanical could figure out that the clutch was failing. i was amazed that this could be the case with so few miles on it, however. at this time i am living in southern california so i can safely sat that at least 2500 of those miles were accumulated on the interstate moving the car from ohio. the dealer in cathedral city, ca blamed me for the failure implying that i was not capable of driving a manual transmission. i, however, am 39 years old, have had 11 new cars since i began driving and all of them were manual transmissions. the only time i have ever needed to have a clutch assembly replaced was my previous car, a 2000 mitsubishi eclipse gt with 93,000 miles (i have that documentation). i am concerned that this is going to be a recurring issues every 10-20,000 miles at least $1000.00 each time. this should have never failed in the first place and then it certainly should have been covered by the warranty. hyundai agreed to pay 60% as a "good will" gesture. i have the extended warranty and i had never encountered a clutch that failed so early on. the other major issue are the tires which are michelin mxv4 plus. i have had every one replaced once and two replaced twice. they don't seem to be able to stay inflated. i purchased a protection plan after the third replacement but i am worried about one of the tires going flat late at night. this is all ridiculous for a new car. *jb