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Hello everyone, I'm just starting my search for a 2-4 yr old IS350 FSport. What things should I look out for? Was the model updated in 2015? Thanks in anticipation. Nicholas.

Ok, my 2cents worth......Ps Mine is a daily so spends alot of time on crappy roads like Parra rd and does not see the track.  Its not lowered but i do have aftermarket rims so its a 1/2 inch wider like the later model ISF's. Fronts: I was running the Mich Pilot Super sports and they were great.  Good for the street, great grip and longevity.  I do enjoy a spirtied drive and getting it a bit loose around corners but maybe dont push it as hard as some given i got about 32000kms out of them (yeah i was surprised as well lol). I have since changed them to the Mich Pilot Sport 4S MPS4S and yeah the hype is justified.  They are a great tyre and didnt mind given i got so much out of the previous MPSS and the 4s are supposed to have more grip and better longevity.  Ive done about 13000kms with the MPS4S and they are still performing great.  Ok prices vary and generally most are very high.  I know Tempe parallel import but they were priced cheaper than most and i simply emailed/phoned about 5 of my local tyre places and on this occasion, Jax was willing to price match so i got 2 front MPS4S in 245/35 19inch for $329 each supplied and fitted.  Extra $50 or near enough for an alignment  (was considering 255 but didnt want to scrub).  The 245/35 fit great, no scrubbing whatsover. Rears: Initially ran the OEM size of 255/35 in MPSS and to be honest i wasnt that impressed.  Ok plenty grip at first but after about 10000kms, i still had decent life in them but they lost a lot of grip and would break action with little effort.  Ok i did up the power (tune, exhaust, headers etc) but still..... Then when i had about 20% life left in them i had a horrible tyre blowout (few of you probably saw my other post where i was lucky the rim wasnt damaged, tyre shredded).  So i need replacements quick and got it towed back home that morning.  I know youre not supposed to run different rears to fronts but i didnt think it was that big a deal in my situation and where i drive.  So i went with 285/30 Kumho PS91's and paid $275 each (local price matched Tempe) so for $550 for both, i couldnt complaint about the price.  They looked great being that wide and performed well.  I was happy with these tyres and would of got them again when the time came but i had problems finding them recently.  I had the PS91's fitted a few years prior and got about 22000kms out of them so cant complain.  The only issue was at first i did get slight scrubbing and that was shaved guards (as said, my aftermarket rims has agressive offset as i believe 285's wont scrub on OEM later model wheels).  After they settled in, no more scrubbing but im sure losing a few mm's in tyre helped lol.  I only have my 2 kids in the rear not adults so little weight as well. When the time came a few months back to change my rears.  The MPS4S was alot more exp than my fronts and given i had different brands front/back for years without issue i looked around and settled on Bridgestone Potenza S001.  Got good reviews etc.  This time i went a bit less wide at 275/30 (didnt want to go 275/35 based off the dia going to 26.6 inch vs OEM of 26in. Id rather keep it the same or under than over to avoid that bulge look). Ok its early days, about 3500kms but very happy with the rears to date.  Good grip, low noise (not that id hear it over the PPE's lol) and longevity im yet to see.  I paid $299 each for those (this time none of my locals wanted to price match) so got them from Tempe.  About $450 was the cheapest i could find for the MPS4S for my rears so decided to pay $600 vs $900. Ps Not sure about the Azenis but i used to run Falken ST115's on my WRX.  Anyone with a WRX knew they were the tyre of choice (REXNET and other WRX forums all those years ago lol).

Damn its been a long journey but that light at the end of the tunnel isnt far now. Good to hear youre sticking to it (well guess youve invested too much time and cash to turn back now) but it will certainly be unique and a 1 off.  Hope it performs well. I dont have that kind of patience.  I know the ISFs are cheap in the US and they sell many SC kits there.  Like others mentioned, our crappy dollar and value of ISF just makes it a more distant option now.  I mean mid 30's, early 40's for a early model ISF, then approx 20k (half the car's value) for the kit.  Perhaps if i had a 2014 model it might prove more worthwhile $$ wise lol Look forward to the final updates.

Hey mate,   They are ISF brembos.   I agree, pedal feel is factory, a little firmer would be ideal but beggars cannot be choosers.

Will do, John - my car is due for it's first service in a few months - but I may drop by earlier to get it looked at - Lexus Brighton is usually very good at sorting out issues!!