I should have my Sumi's by Friday and hopefully can get them mounted ASAP on my HRE's. I also bought spacers. 15mm for rear/7mm for front.

 

just wanted to chime in that I have used sumitomos in the past and they are a FANTASTIC tire.... and the price makes them EVEN BETTER! No reason to spend almost triple the amount for a michelin in my opinion.

 

well, gonna get some sumi's.....my rears are wearing out inside....reading about alignment on this forum too.... for most daily drivers, what is the ratio of front to back tire wear? is it about 1:2 ?, 1:3?
i'm a newbie..my 03 x50 fronts look good, ps2, but rear inside is going and have maybe a few thousand miles left....

james R
'03 x50 tip 54K miles

 

It's not unusual for the inside of the rears (especially the right), to wear quicker, especially if you drive with a heavy right foot. typically, 2:1 rear to fronts need to be replaced. Usually about 8-12K for the rears and double that for the fronts.

 

Been on my new Sumi's for about 2 weeks now...Smooth and quiet. Satisfied except for the cooler weather traction. But I am at almost 600whp...

 

I've only had one set of tires, Kuhmo SPT's, on my C4S so far and they all wore out at the same time. 15K street miles with over 30 autocross events on them.

 

8000 miles.

No noise.

Fronts...look new. Perhaps 1-2mm down.

Rears. 3-4mm down...half left or more.

No DE days on these tires, but darn if they are not doing double the wear of the contis and triple the pirellis....

Highly recommended!

Jeff


(I plan to put some DE time in when things allow....we shall see. I'll buy some new rears to have "around" as I suspect DE will be tough on them, but that is still less than one rear PS2...for 2 rears!)

 

When My MPS Ribs wear out, I'll buy a set of these for sure...

Mike

 

I don't have them on my pcar, but they have been superb on my daily C30. I can't tell you how impressed I am with these tires. They were half the price of the factory michelins. The handling is drastically improved and I've yet been able to make them howl. The rain performance has been stellar as well. 2 thumbs up so far. We'll see how they wear. I got 38K out of the stock michelins over 10 months, so that will be my benchmark.

 

Damon at Tire Rack hooked me up with a set of the Sumi's for my 996TT. As many have experienced before, he provided me with outstanding service. He recommended shipping them directly to a local NTB store for mounting which saved any hassles with the UPS man trying to catch me at home. Thus far I haven't had an opportunity to do much other than "commute" with them, but they seem a little quieter than my old (and worn) Michelin Pilot Sports, and the road expansion crack "thump" seems to be a little reduced as well. As the Sumi's are about 1/2 the price of new Michelin's, I've already come to the conclusion that they're far better than only "half as good" simply based on the price. Time will tell if I remain satisfied, but austerity seems to be hard to argue with lately.

 

Haven't tried the III but remember the II are good for the price

 

I think most people in here burn through rubber fairly quickly. I know I do, but for informational purposes. What is the longest that you should keep a set of tires on age wise. I have heard that rubber hardens fairly fast, 3 years or so. Is this true and should tires be replaced within a certain time frame regardless of wear?

 

Great thread. Thanks everyone for the great follow up and reviews on the Sumitomo's. I will definitely be buying a set after my run down my PZero's.

 

I have also had these tires on my car for about 500 miles or so now.
The price was my primary driver to buy these. I figure if they need to be replaced regularly, may as well be reasonable to do so.
The noise seems to be very good to this point. Put it this way, I hear the engine/exhaust over the tires and I have stock exhaust.
I pushed the car a bit on some twisties, I couldnt tell if it was a 'stock' suspension issue or tires, but I just thought the limit should be a little further out than this. But my point of comparison is a 993 that had a stiffer suspension, so hard to say, but I suspect the tires had more limitations than the the suspension due to the fact the front felt lighter at speed than I think it should and it made the just generally felt unstable at times.
Anyhow, I definitely think these tires are worth a try, they are cheap enough if you hate them, you are out the time of wearing them out FAR more than you are out a large sum of money. I am HOPING Sumitomo eventually makes the right sizes for 19 inch set up....right now these are non existent in any kind of 315/19 option.

~Ken

 

What is the most miles you have put on your Sumis?