yakisoba Posted December 12, 2011 Share Posted December 12, 2011 I was considering the 245/18 Hoosier. Has anyone tried that tire on stock Z06 rear wheels? 10.5" wide? Or will it need narrow ones? Many thanks. Quote Link to comment Share on other sites More sharing options...
Varkwso Posted December 12, 2011 Share Posted December 12, 2011 I was considering the 245/18 Hoosier. Has anyone tried that tire on stock Z06 rear wheels? 10.5" wide? Or will it need narrow ones? Many thanks. No one has tested yet but the consensus opinion is 10.5 will be too wide. Wagon wheels, or for the affluent the magnesium factory wheels, may be a hot commodity. Quote Link to comment Share on other sites More sharing options...
sperkins Posted December 12, 2011 Share Posted December 12, 2011 Agreed. The 9.5" stock wheels are definitely maybe the way to go. Probably. So glad I don't have to worry about that crap next year. Quote Link to comment Share on other sites More sharing options...
Brent Posted December 12, 2011 Share Posted December 12, 2011 Agreed. The 9.5" stock wheels are definitely maybe the way to go. Probably. So glad I don't have to worry about that crap next year. This comment + buying splitters=Scott in TTS/ST2? BTW, I have a couple of 17x9.5 OEM Speedlines I'd trade for a couple of 18x10.5 if anyone is interested. Won't be able to swap until probably April though. SE and TX locals have priority. Quote Link to comment Share on other sites More sharing options...
Varkwso Posted December 12, 2011 Share Posted December 12, 2011 Agreed. The 9.5" stock wheels are definitely maybe the way to go. Probably. So glad I don't have to worry about that crap next year. This comment + buying splitters=Scott in TTS/ST2? BTW, I have a couple of 17x9.5 OEM Speedlines I'd trade for a couple of 18x10.5 if anyone is interested. Won't be able to swap until probably April though. SE and TX locals have priority. I hope he swaps in that LS6 so we do not have to chase the LS1 that just won't die in TTS. Quote Link to comment Share on other sites More sharing options...
kbrew8991 Posted December 12, 2011 Share Posted December 12, 2011 I wonder if the "go faster on narrower tires" thing is really going to work when you go with a tire that's actually narrower. Color me genuinely curious yet skeptical. Quote Link to comment Share on other sites More sharing options...
obzezzed350 Posted December 12, 2011 Share Posted December 12, 2011 I wonder if the "go faster on narrower tires" thing is really going to work when you go with a tire that's actually narrower. Color me genuinely curious yet skeptical. Ill let you know in Jan... Quote Link to comment Share on other sites More sharing options...
yakisoba Posted December 12, 2011 Author Share Posted December 12, 2011 It's a half inch narrower, I think. Thus, a little less contact patch. However, the different sidewall is what worries me. That and the fact the tire likely wasn't built for a 3200 pound car. Quote Link to comment Share on other sites More sharing options...
obzezzed350 Posted December 12, 2011 Share Posted December 12, 2011 the 255/35 had a load rating of 1047lbs...the 245/35 is 992lbs Quote Link to comment Share on other sites More sharing options...
kbrew8991 Posted December 12, 2011 Share Posted December 12, 2011 992 x 4 = 3,968 but how loaded does the outside front get in a turn...? Is that 992lb rating set to account for that, or do you need to do the engineering on your end to make sure you don't exceed that? Quote Link to comment Share on other sites More sharing options...
yakisoba Posted December 12, 2011 Author Share Posted December 12, 2011 That has to be static... Too hard to measure otherwise. Quote Link to comment Share on other sites More sharing options...
philstireservice Posted December 12, 2011 Share Posted December 12, 2011 If you are talking about a 245/35R18, it's shorter too. That will effect ride height and gearing. It's equivalent to a 245/40R17.... Quote Link to comment Share on other sites More sharing options...
AZELISE Posted December 12, 2011 Share Posted December 12, 2011 Hoosier's R6 in 225-50/16 on an 8" wheel is wider than their 245-40/17 on an 8.5" wheel. Lots of points back! Quote Link to comment Share on other sites More sharing options...
BlkGt3 Posted December 12, 2011 Share Posted December 12, 2011 Run 225/40 17 R6 on 9" rim E36M3 3275#'s with driver and no problems. Of course I have no hp/torque Peter Quote Link to comment Share on other sites More sharing options...
drivinhardz06 Posted December 12, 2011 Share Posted December 12, 2011 here's what I'm running Quote Link to comment Share on other sites More sharing options...
jason Posted December 12, 2011 Share Posted December 12, 2011 here's what I'm running Autocrosser. Quote Link to comment Share on other sites More sharing options...
philstireservice Posted December 13, 2011 Share Posted December 13, 2011 Hoosier's R6 in 225-50/16 on an 8" wheel is wider than their 245-40/17 on an 8.5" wheel. Lots of points back! You want to be careful about running a wide tire on a narrow wheel. There is no real advantage, some of the tread is never used. If the tire is pulled in because of the narrower wheel, two things happen. The tread patch gets narrower, good for the rain not so good for the dry. Also the sidewall gets softer and the steering response slows. Ideally you want the sidewall of the tire to be flat/even with the wheel, or the tire to a bit narrower than the wheel (think German Car Touring tires and wheels), then you will get quicker steering response and use more, if not all, of the tread contact patch. Quote Link to comment Share on other sites More sharing options...
Cobra4B Posted December 13, 2011 Share Posted December 13, 2011 If you are talking about a 245/35R18, it's shorter too. That will effect ride height and gearing. It's equivalent to a 245/40R17.... The Hoosier A6 is a 245/40/18. It's actually 1" taller than the 255/35/18 most of us have been running. Quote Link to comment Share on other sites More sharing options...
brkntrxn Posted December 13, 2011 Share Posted December 13, 2011 Hoosier's R6 in 225-50/16 on an 8" wheel is wider than their 245-40/17 on an 8.5" wheel. Lots of points back! You want to be careful about running a wide tire on a narrow wheel. There is no real advantage, some of the tread is never used. If the tire is pulled in because of the narrower wheel, two things happen. The tread patch gets narrower, good for the rain not so good for the dry. Also the sidewall gets softer and the steering response slows. Ideally you want the sidewall of the tire to be flat/even with the wheel, or the tire to a bit narrower than the wheel (think German Car Touring tires and wheels), then you will get quicker steering response and use more, if not all, of the tread contact patch. Phil, Which one of the combinations he posted above do you consider a wide tire on a narrow wheel? -Kevin Quote Link to comment Share on other sites More sharing options...
Kubs Posted December 13, 2011 Share Posted December 13, 2011 The Hoosier A6 is a 245/40/18. It's actually 1" taller than the 255/35/18 most of us have been running. The 245/40/18 is going to be the hot ticket I would think, not the 245/35/18 (both are A6 sizes). The 245/40 is the same height as stock tires, and very similar to the 275/35s that seem to be easier to drive. It is .2" wider in contact patch than the 245/35 and has a higher load rating than both the 255/35 and 245/35 at 1235lbs. Quote Link to comment Share on other sites More sharing options...
UKRBMW Posted December 14, 2011 Share Posted December 14, 2011 Can you really make a 390 whp Vette stick on 245s?? Quote Link to comment Share on other sites More sharing options...
kbrew8991 Posted December 14, 2011 Share Posted December 14, 2011 that little pedal on the right need not be fully on or fully off Quote Link to comment Share on other sites More sharing options...
BlkGt3 Posted December 14, 2011 Share Posted December 14, 2011 Can you really make a 390 whp Vette stick on 245s?? Depends on what you mean by stick. Peter Quote Link to comment Share on other sites More sharing options...
philstireservice Posted December 14, 2011 Share Posted December 14, 2011 Hoosier's R6 in 225-50/16 on an 8" wheel is wider than their 245-40/17 on an 8.5" wheel. Lots of points back! You want to be careful about running a wide tire on a narrow wheel. There is no real advantage, some of the tread is never used. If the tire is pulled in because of the narrower wheel, two things happen. The tread patch gets narrower, good for the rain not so good for the dry. Also the sidewall gets softer and the steering response slows. Ideally you want the sidewall of the tire to be flat/even with the wheel, or the tire to a bit narrower than the wheel (think German Car Touring tires and wheels), then you will get quicker steering response and use more, if not all, of the tread contact patch. Phil, Which one of the combinations he posted above do you consider a wide tire on a narrow wheel? -Kevin Neither really. I guess the 225/50R16 would be a better fit on the 8" wheel, going by specs. But a visual check with a tape measure is always better. Quote Link to comment Share on other sites More sharing options...
obzezzed350 Posted December 14, 2011 Share Posted December 14, 2011 At this rate, Spec C5Z will be on 205/50/15s by 2015.. Quote Link to comment Share on other sites More sharing options...
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