Welcome to the North American Subaru Impreza Owners Club Tuesday July 7, 2015
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
Click here to visit TireRack
Tire & Wheel Forum sponsored by The Tire Rack

Losing traction? Need new tires?
Click here to visit the NASIOC Upgrade Garage...
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Tire & Wheel

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 04-23-2005, 07:37 PM   #1
caterpill
Scooby Specialist
 
Member#: 27136
Join Date: Oct 2002
Exclamation Sumitomo HTR+ 225/50/ZR16 feels very unnatural on Stock WRX Rims

Ugh. I've just bought a set of Sumitomo HTR+ 225/50/ZR16 tires on all four corners, and unfortunately, I feel very saddened and stupid a the fact that I chose this tire.

Initially, I wanted to settle for a cheaper tire that was at least a little better than my stock RE92's that came with the car, and had reasonable treadwear, not the rediculous 160 the Bridgestones had.

I think I made 2 bad decisions that ultimately made my car feel "un-fun" and almost dangerous to drive. First, even after doing research on fitting 225's on stock WRX rims, I ignored the fact that I would induce more sidewall flexing in assumption that the increased grip would more then make up for it. Second, I chose an all-weather tire. A big no-no. I live in hawaii, a state with perfect 80's temperatures, some rain, but no snow or adverse weather conditions, but in hopes of gaining more treadwear of all-weather tires, I think I basically chose a tire that sacrifices quite a bit of performance to be slated as an all-weather tire.

My problem is that after driving around some, these tires feel very floaty and have mad flex. Peak grip has been increased, but it does not make up for the very soft sidewalls at all. On the road, steering inputs have turned to complete mush and are hardly responsive. I find myself awkwardly trying to dodge obstacles like potholes and road hazards simply because the time it takes for my steering inputs to work, the obstacle is under the car already. On the freeway, it creates a dangerous condition because any sudden steering inputs are very delayed, yet create the same initial "kick" that I first put in. If I make a sudden or enthusiastic lane change, the rear end wobbles so much that I feel like i've initiated a "feint" maneuver. I can feel and visually see how much the rear (and probably the front too) wobbles, by slightly but rapidly turning the steering wheel left and right repeatedly on the freeway. I haven't driven in rain yet, but if it feels this bad in the dry, I think it would feel like my car is constantly loosing traction; more or less, I wouldn't know the fine line between the two conditions.

I think the problem is not as bad when using 225 width tires but my combination was just for the worse. At this point, I consider my stock RE92's much better and safe to drive, while being more responsive even if it does not grip as well as the HTR+'s do.

I noticed while changing the tires, that the RE92's sidewalls are physically stiffer. The HTR+ tires have 1 polyester ply sidewalls, while the stock RE92's have 2-ply polyester sidewalls. Oh, i'd like to add that i've tried bumping up the tire pressure to 45 to see what difference it makes, but to no avail.

When the car is sitting on the ground and I push on the tire itself, let it be sidewall or tread, it feels pretty mushy, like the pillsbury doughboy.

Oh, I forgot to mention that I am running reasonably stiff suspension that may or not influence my ability to notice this extreme sidewall flex. I have Ground Controls + Koni inserts with 750lb/400lb F/R.

If possible, I would like to research or get insights on a tire that I could possibly buy at tirerack for a reasonable price similar to the pricerange of $115 a tire, yet either meets or exceeds the performance and treadwear of the stock Bridgestone RE92 in the stock size, 205/55/R16. Oh, and of course, this time, no all weather. A summer tire is where it's at, no mistakes this time. I feel pretty idiotic and helpless right now. I'll drive the car more to see if I can live with it, but I doubt it. These tires kind of take away what little confidence I have in controlling my car. I'd just like to get a set of tires that have stiffer sidewalls.

Any reccomendations, insights and comments are greatly appreciated.
* Registered users of the site do not see these ads.
caterpill is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 04-23-2005, 08:13 PM   #2
Bort
Scooby Specialist
 
Member#: 27075
Join Date: Oct 2002
Chapter/Region: Tri-State
Location: Dutchess County, NY
Vehicle:
09 WRX, 03 WRX,
98 OBS

Default

Have you experimented with tire pressure yet? What pressure are you running?
Bort is online now   Reply With Quote
Old 04-23-2005, 08:37 PM   #3
Uncle Scotty
Visiting NASIOC Timeout
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK buy Nates beans
westcoastroasting.com

Default

....w 0 w.....
Uncle Scotty is online now   Reply With Quote
Old 04-23-2005, 11:13 PM   #4
caterpill
Scooby Specialist
 
Member#: 27136
Join Date: Oct 2002
Default

Initially, when I first swapped the tires, I tried 35psi, then today I bumped it to 45psi (pretty ridiculous) and it didn't do that much. These tires ARE quiet and comfortable, but I don't really care about both that much. Haha.

Max pressure is 51psi, but 45 should have been enough to do something.

*shrug*

Think twice before ya buy an all-weather tire, lol.
caterpill is offline   Reply With Quote
Old 04-24-2005, 12:08 AM   #5
express_wagon
Scooby Specialist
 
Member#: 68346
Join Date: Aug 2004
Chapter/Region: NESIC
Vehicle:
2001 M5
2013 Abarth Cabrio

Default

you better have a good reason for buying a wrx in hawaii...you have a four season car in a season world!!!

you may be able to solve part of your problem with wider rims. look at 16x7 98-01 RS wheels. that'll give some extra sidewall support.
express_wagon is offline   Reply With Quote
Old 04-24-2005, 01:04 AM   #6
calworld
Scooby Specialist
 
Member#: 5711
Join Date: Apr 2001
Location: Bentonville, AR
Vehicle:
2004 STI
WRB

Default

I will only use HTR+ in winter...it actually has good traction in snow.
PRAY FOR SNOW in Hawaii and u can rip some Supra
calworld is offline   Reply With Quote
Old 04-24-2005, 02:37 AM   #7
caterpill
Scooby Specialist
 
Member#: 27136
Join Date: Oct 2002
Default

argh, I don't think I can get used it. It's one of those things you can't forget as you drive, lol. I gotta swap em out. : /

I guess no one has any ideas.
caterpill is offline   Reply With Quote
Old 04-24-2005, 03:14 AM   #8
WRXRgr
Scooby Specialist
 
Member#: 54942
Join Date: Feb 2004
Chapter/Region: South East
Vehicle:
2004 WRX

Default

Take it up to 48 or 50 in front, ~3 less in rear. Hard to believe going from 35 to 45 wasn't a noticeable improvement.
WRXRgr is offline   Reply With Quote
Old 04-24-2005, 03:19 AM   #9
caterpill
Scooby Specialist
 
Member#: 27136
Join Date: Oct 2002
Default

Well, going from 35-45psi did make a difference, but it was more of a slight improvement, believe it or not. Moreso slight hardness increase over bumps, but it's this odd feeling that the rear sways too much when i'm making any kind of turn at speed. Not a body roll issue, just the rim moving independently from the tire laterally a little too much. Just for the heck of it, i'll over-inflate it to 50psi to see what it does.
caterpill is offline   Reply With Quote
Old 04-24-2005, 08:25 AM   #10
WRXRgr
Scooby Specialist
 
Member#: 54942
Join Date: Feb 2004
Chapter/Region: South East
Vehicle:
2004 WRX

Default

ahhhh....if max pressure is 51 ...then 50 won't be overinflated.

If that doesn't do it, maybe you can shoot em full of expanding foam...j/k.
WRXRgr is offline   Reply With Quote
Old 04-24-2005, 01:34 PM   #11
Uncle Scotty
Visiting NASIOC Timeout
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK buy Nates beans
westcoastroasting.com

Default

I lived in hawaii for 5 years.....and I'd be all over some MX's or the Rs2's or if I had the $$$ RA-1's....and just take it easy in the rain.....or 451's.....
Uncle Scotty is online now   Reply With Quote
Old 04-24-2005, 06:44 PM   #12
caterpill
Scooby Specialist
 
Member#: 27136
Join Date: Oct 2002
Thumbs up

Quote:
Originally Posted by WRXRgr
ahhhh....if max pressure is 51 ...then 50 won't be overinflated.

If that doesn't do it, maybe you can shoot em full of expanding foam...j/k.
Hehe, yeah I know that :P

I was just saying if you run your tires at 50psi, its guaranteed to make shorter work of your center tread.

Anyhow, unfortunately, pumpin em up to 50psi didn't do much either. I shoulda went straight from 35psi to 50psi. There would have been more total stiffness increase.

Jeez, I would put expanding foam if that was a viable, safe alternative, HAHA.

I guess I just need to do more research, the dumbass I am, i'm so impatient I always screw myself over with stupid decisions.

Uncle Scotty, cool, it does seem the general thing is, take it easy in the rain, for more traction in the dry. I'll take a good look at those MX/Rs2/RA-1/451's, and check it out. Thanks for the input, I really appreciate it.
caterpill is offline   Reply With Quote
Old 04-24-2005, 07:46 PM   #13
MrElussive
Scooby Newbie
 
Member#: 32838
Join Date: Feb 2003
Location: NJ
Vehicle:
08 WRX 5MT
Dark Gray

Default

caterpill, you should have just stuck with the OEM tire size (205/55-16) and gotten a set of Max Performance Summer Tires. It would have given you amazing dry- and wet-road performance (FAR better than the OEM all-season tires) and you live in Hawaii for God's sake. Your location SCREAMS for summer performance tires all-year-round.
Your WRX probably feels really goofy right now because the tires are just way too wide for the stock rims (which are 16x6.5"). Even if you were running a set of aftermarket 16x7" wheels, you'd still be best off with 205/55-16 tires.

If you want overall better handling, you have to go with a wider AND lower profile wheel setup...these two usually go hand-in-hand. Good luck dude.
MrElussive is offline   Reply With Quote
Old 04-24-2005, 07:54 PM   #14
Uncle Scotty
Visiting NASIOC Timeout
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK buy Nates beans
westcoastroasting.com

Default

...Id get a set of RS wheels and put the 225/50-16's on 'em....
Uncle Scotty is online now   Reply With Quote
Old 04-24-2005, 08:18 PM   #15
caterpill
Scooby Specialist
 
Member#: 27136
Join Date: Oct 2002
Wink

hmm, just thought i'd post some pics of these fatties.





They look good but aren't quite it. hohoho ..

Last edited by caterpill; 06-02-2005 at 09:42 PM.
caterpill is offline   Reply With Quote
Old 04-24-2005, 09:11 PM   #16
Uncle Scotty
Visiting NASIOC Timeout
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK buy Nates beans
westcoastroasting.com

Default

....jezus...what a melon shooter
Uncle Scotty is online now   Reply With Quote
Old 04-24-2005, 09:30 PM   #17
express_wagon
Scooby Specialist
 
Member#: 68346
Join Date: Aug 2004
Chapter/Region: NESIC
Vehicle:
2001 M5
2013 Abarth Cabrio

Default

damn, those things are meaty!
express_wagon is offline   Reply With Quote
Old 04-25-2005, 12:40 AM   #18
caterpill
Scooby Specialist
 
Member#: 27136
Join Date: Oct 2002
Default

Haha, yes to both comments. Muffler = HKS Carbon-Ti.
caterpill is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
225/50-16 or 205/50-16 on stock WRX rims? carlm Brakes, Steering & Suspension 6 03-17-2003 06:34 PM
Sumitomo HTR+ 225/50/ZR16 Jim Essenberg Car Part Reviews 27 01-22-2003 09:43 PM
225 50 r16 on stock wrx rims? harowerksxcr Brakes, Steering & Suspension 0 10-08-2002 09:48 PM
Tire psi Sumitomo HTR+ 225/50/16 Jim Essenberg Brakes, Steering & Suspension 1 07-28-2002 05:43 PM
225/50/16 or 205/55/16 Dunlop 5000 on stock wrx rims? blackrex Brakes, Steering & Suspension 1 02-20-2002 06:50 PM


All times are GMT -4. The time now is 02:46 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2015 Axivo Inc.
Copyright ©1999 - 2015, North American Subaru Impreza Owners Club, Inc.