dschultz Posted August 24, 2012 Share Posted August 24, 2012 (edited) ... 17in wheels with 225/40 tiresThe speedo must be off by about 7% running that tire size. I guess that means fewer speeding tickets for him. ;-) Edited August 28, 2012 by dschultz correction Link to comment Share on other sites More sharing options...
Diggs Posted August 25, 2012 Share Posted August 25, 2012 The tein-s' are the exact route I'd like to take with mine. All I need are the struts from the gt wagon. Any suggestions?? I've been on the classifieds daily... Link to comment Share on other sites More sharing options...
Diggs Posted August 25, 2012 Share Posted August 25, 2012 (edited) Will the legacy gt sedan struts work for the OBXT conversion? Only because they're readily available. Edited August 25, 2012 by Diggs Link to comment Share on other sites More sharing options...
Subie Lovers Posted August 25, 2012 Share Posted August 25, 2012 Will the legacy gt sedan struts work for the OBXT conversion? Only because they're readily available. research... the answer is all over this forum!!! Link to comment Share on other sites More sharing options...
Impatient Posted August 25, 2012 Share Posted August 25, 2012 The tein-s' are the exact route I'd like to take with mine. All I need are the struts from the gt wagon. Any suggestions?? I've been on the classifieds daily... Diggs, Pm me after labor day, I may have what you want...from 07 wagon virtually new Link to comment Share on other sites More sharing options...
dschultz Posted August 26, 2012 Share Posted August 26, 2012 2005 and up Legacy, GT, XT , OB etc all use wheel speed sensor for the speedo so no matter what wheels and tires you put on the speedo is spot on So how does the ABS & speedo know you changed the tire size, in the case above smaller, therefore more revs/mile indicating moving faster on the dial? Link to comment Share on other sites More sharing options...
Bimmer Posted August 27, 2012 Share Posted August 27, 2012 If you change the tire size, how quickly or slowly the pulses occur will change and the ECU corrects it in our cars. Not all cars do that but ours does. Some cars ECU is programmed for nominal tire size (circumference) but the newer cars look for actual wheel speed. In the old days it was a mechanical gear in the transmission and if you changed tire size and still had the same speedo gear it would be off... Thats why when I put my 08 STI 6 speed and R180 rear diff in my car the speedo is spot on even though the gear ratio changed. This doesn't make any sense to me. It DOES make sense that wheel speed sensors would automatically adjust for changes in gearing, as in your case. It does NOT make sense that wheel speed sensors know the circumference of the tire, if it's not OEM. They only know how fast the wheel/tire are spinning, not how big they are (or how far or how fast they're traveling). Changing the wheel/tire WILL change speedometer and odometer readings. Link to comment Share on other sites More sharing options...
Scooby2.5 Posted August 27, 2012 Share Posted August 27, 2012 (edited) OOOPS!!!! I deleted my posts because..... You are correct, not sure why I was thinking this. I was probably thinking of times when I changed both tire size and gearing at the same time. Edited August 27, 2012 by Scooby2.5 Link to comment Share on other sites More sharing options...
SubOperator Posted August 28, 2012 Share Posted August 28, 2012 Scooby got me all confused, I was thinking what kind of sensor must that be... Afaik ecu uses ABS sensor which as Bimmer correctly pointed out can not tell how big the tire is, just how many repetitions per minute it is doing... 2005 LGT Wagon Limited 6 MT RBP Stage 2 - 248K 2007 B9 Tribeca Limited DGM - 258K SOLD - 2005 OB Limited 5 MT Silver - 245K SOLD - 2010 OB 6 MT Silver - 205K Link to comment Share on other sites More sharing options...
SubOperator Posted August 28, 2012 Share Posted August 28, 2012 btw does anyone have a stock LGT wagon suspension for sale, got an 05OB for my son and guess what - he wants to lower it right away 2005 LGT Wagon Limited 6 MT RBP Stage 2 - 248K 2007 B9 Tribeca Limited DGM - 258K SOLD - 2005 OB Limited 5 MT Silver - 245K SOLD - 2010 OB 6 MT Silver - 205K Link to comment Share on other sites More sharing options...
Scooby2.5 Posted August 28, 2012 Share Posted August 28, 2012 Scooby got me all confused, I was thinking what kind of sensor must that be... Afaik ecu uses ABS sensor which as Bimmer correctly pointed out can not tell how big the tire is, just how many repetitions per minute it is doing... sorry about that Link to comment Share on other sites More sharing options...
fstaslp Posted June 25, 2013 Share Posted June 25, 2013 I too am struggling with Tire Size. I have Prodrove PFF7's that are 18x8 and 51 offset. I am pretty sure I can fit 235/45/18, but now I am wondering about 245/45/18. It looks damn close to fitting on willitfit.com. Link to comment Share on other sites More sharing options...
Moderators BarManBean Posted June 25, 2013 Moderators Share Posted June 25, 2013 fstaslp, I can pretty much guarantee that you can't fit 245/45/18s with a stock style strut up front. I test fit a set of 245/40/18s on a +48 wheel (18x8.5 I believe) and the clearance to the spring perch was quite close. Other than the spring perch I think you might be able to massage the tire (or rather the car) to fit, but you need a lower offset or a smaller tire to clear the perch. "Bullet-proof" your OEM TMIC! <<Buy your kit here>> Not currently in stock Link to comment Share on other sites More sharing options...
Scooby2.5 Posted June 25, 2013 Share Posted June 25, 2013 I too am struggling with Tire Size. I have Prodrove PFF7's that are 18x8 and 51 offset. I am pretty sure I can fit 235/45/18, but now I am wondering about 245/45/18. It looks damn close to fitting on willitfit.com. I have 245x45x18 on stock 18.5" 55 offset STI Enkei wheels. Used a 15mm adapter from adaptech which gave me a 40 offset. I had to roll the fenders a bit but it looks great. Need to roll the front now as once in a while it hits... Link to comment Share on other sites More sharing options...
Sideways the Seven Posted June 25, 2013 Share Posted June 25, 2013 (edited) ^aren't you on coils though? I tried that same size and it rubbed on EVERYTHING. That was on 18x9.5 +38 though. I actually just picked up some Pff7s too but I'm thinking 245/40/18 Sent from my SGH-T699 using Tapatalk 2 Edited June 25, 2013 by Sideways the Seven -Brandon 2007 Chevrolet Suburban LT3 1981 Chevrolet C10 LWB Link to comment Share on other sites More sharing options...
Moderators BarManBean Posted June 25, 2013 Moderators Share Posted June 25, 2013 Yeah, coils open up options big time--that's the main reason I'm considering them. Fender work can more-or-less ALWAYS be fixed with time and money--stock strut clearance (the front lower spring perch) cannot be fixed aside from switching to coils. "Bullet-proof" your OEM TMIC! <<Buy your kit here>> Not currently in stock Link to comment Share on other sites More sharing options...
Sideways the Seven Posted June 25, 2013 Share Posted June 25, 2013 Same here. I really wanted to avoid going with coils, but I'm thinking the 235/40/18 are looking too small and I'd rather not have my tire size options limited by the stock strut body. I toyed with the idea of using the stock OBXT strut bodies with some LGT lowering springs, but then I think proper damping is going to be an issue. Too bad there isn't a Koni setup for the longer strut body. -Brandon 2007 Chevrolet Suburban LT3 1981 Chevrolet C10 LWB Link to comment Share on other sites More sharing options...
Scooby2.5 Posted June 25, 2013 Share Posted June 25, 2013 Yep Im on BC/BR coils...... 9.5 rim and offset 38 would cause hitting like you said. I will say if I wasnt as low as I am, it wouldn't hit at all. Link to comment Share on other sites More sharing options...
Sideways the Seven Posted June 25, 2013 Share Posted June 25, 2013 I think I'm going to have to go ahead and bite the bullet on some coils. Did you do any custom damping or spring rates? Sent from my SGH-T699 using Tapatalk 2 -Brandon 2007 Chevrolet Suburban LT3 1981 Chevrolet C10 LWB Link to comment Share on other sites More sharing options...
Scooby2.5 Posted June 25, 2013 Share Posted June 25, 2013 Nope just call josh nahum at import image. That is how I got my BC/BR outback coils Link to comment Share on other sites More sharing options...
Sideways the Seven Posted June 26, 2013 Share Posted June 26, 2013 I'll definitely give him a ring. Did you corner weight/balance? Sent from my SGH-T699 using Tapatalk 2 -Brandon 2007 Chevrolet Suburban LT3 1981 Chevrolet C10 LWB Link to comment Share on other sites More sharing options...
ssbtech Posted June 26, 2013 Share Posted June 26, 2013 fstaslp, I can pretty much guarantee that you can't fit 245/45/18s with a stock style strut up front. I test fit a set of 245/40/18s on a +48 wheel (18x8.5 I believe) and the clearance to the spring perch was quite close. Other than the spring perch I think you might be able to massage the tire (or rather the car) to fit, but you need a lower offset or a smaller tire to clear the perch. His listed tires have a slightly smaller diameter than the stock OB tire size (which fits under LGT struts). If a wheel with the appropriate offset is used, why wouldn't those fit? http://www.1010tires.com/Tools/Tire-Size-Calculator/225-55R17/245-45R18/235-45R18 Link to comment Share on other sites More sharing options...
Moderators BarManBean Posted June 26, 2013 Moderators Share Posted June 26, 2013 (edited) His listed tires have a slightly smaller diameter than the stock OB tire size (which fits under LGT struts). If a wheel with the appropriate offset is used, why wouldn't those fit? http://www.1010tires.com/Tools/Tire-Size-Calculator/225-55R17/245-45R18/235-45R18 He names a specific offset, +48. That's why I don't think they will fit. And again, just because the tire is the same height, the wider width causes issue. Edited June 26, 2013 by BarManBean "Bullet-proof" your OEM TMIC! <<Buy your kit here>> Not currently in stock Link to comment Share on other sites More sharing options...
dschultz Posted June 26, 2013 Share Posted June 26, 2013 (edited) I have 245/45-18 tires on 18x7.5 wheels with a +45mm offset. My OBXT is held up by Koni insert LGT suspension. The wheels I have clear Brembo calipers. No rubbing anywhere. The tire's thread width is 8.5" and the section width is 9.6". Edited June 26, 2013 by dschultz Link to comment Share on other sites More sharing options...
Moderators BarManBean Posted June 26, 2013 Moderators Share Posted June 26, 2013 I have 245/45-18 on 18x7.5 wheels with a +45mm offset. My OBXT is held up by Koni insert LGT suspension. The wheels I have clear Brembo calipers. No rubbing anywhere. Really? Lol...This is driving me crazy--conflicting reports from all directions. Some claim excessive rubbing on stock outback height and now here you are at LGT height claiming no issues. I'm gonna go crazy of this :spin: BTW, those are some seriously meaty tires on 7.5" wheels! "Bullet-proof" your OEM TMIC! <<Buy your kit here>> Not currently in stock Link to comment Share on other sites More sharing options...
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