Guest GeordieBoyKel Posted June 1, 2006 Share Posted June 1, 2006 Right, here we go... My very first post wanting/needing help from all you gurus... I have just bought some new alloys from a really nice chap in Newton Abbot. Found hime really helpful and great to deal with. My problem is that I have gone for a 19" wheel, 8.5 front and 9.5 rear with a 20 offset. The fronts are fine but I am running 275/35/19s on the rear... Well... Trying to. I think I may of made a bit of a boo boo..! They are catching on the arches to the point where it is not possible to drive the car. However, it does looks FAT and was the desired affect I wanted! Anyway, I have rolled the arches and I can now drive the car but they still catch when cornering on the little black spats/trim toward the back of the arch. I really want to keep these wheels so do you guys have any other ideas? Smaller tires? Would this fix my problem? Thanks to you all in advance (Thats if I get any replies). Quote Link to comment Share on other sites More sharing options...
Ewen Posted June 1, 2006 Share Posted June 1, 2006 The fronts are fine but I am running 275/35/19s on the rear FONT] Well, heres one reply at least, but Im no expert...275 / 35s on 19"s give you almost an inch more outside diameter than original fit....275 / 30s are I think more suitable and will give an extra 1/2" or 12mm clearance. Quote Link to comment Share on other sites More sharing options...
mikeyb10supra Posted June 1, 2006 Share Posted June 1, 2006 . I really want to keep these wheels so do you guys have any other ideas? Smaller tires? Would this fix my problem? Thanks to you all in advance (Thats if I get any replies). Yep get some stock 17"s, sorry im not such help...never been a wheel buff, all I can tell you is, you are really pushing the steering, bearings and suspension components to their limits with 19"s it make me wonder now if supras are being brought for looks first and performance second.....people have to realise the supra is a powerfull, refined machine and does not take to anything crazy like 19" I guess if you were to do it properly, keep your 19"'s get the arches flared, new adjustable suspension all round, new bushings+bearings and let someone like Chris Wilson set it up for you or failing that get some sensible 18"s if you must and have somthing that wont let you down Quote Link to comment Share on other sites More sharing options...
Guest GeordieBoyKel Posted June 1, 2006 Share Posted June 1, 2006 Thanks Ewen. I do still have my stock wheels but that does not really help me, but thanks Mike anyway. However, I have my new Tein fully adjustables coming next week from Martin @ MkivStore.com. What a nice chap he is too... Very helpful. As for performance... My intention is to keep the stock alloys for track days and such like, but my 19s are purely an indulgence. At the end of the day you are only meant to do the speed limit and they do look the nutz for cruising about... Quote Link to comment Share on other sites More sharing options...
mikeyb10supra Posted June 1, 2006 Share Posted June 1, 2006 19"s will be ok, follow my above points and you will be ok....not sure how long everything wil last for but give it a try, if in any doubt, sell your 19"s to a range rover driver and slap on some 18" good luck with it anyways, keep us informed on the path you decide to follow young jedi Quote Link to comment Share on other sites More sharing options...
Guest GeordieBoyKel Posted June 1, 2006 Share Posted June 1, 2006 I do know what you mean about additional stresses having messed around with cars for many years. I have even blue printed an engine (fitter-turner by trade) in my time. I really do appreciate your wise words and no doubt your good intentions. The thing is, I really want to do something different for me. Normally I would of stuck to 17s or even pushed it to 18s but I have never had a car with 19s and it does look sooooooo FAT. A look I wanted for this new project of mine. Quote Link to comment Share on other sites More sharing options...
mikeyb10supra Posted June 1, 2006 Share Posted June 1, 2006 I do know what you mean about additional stresses having messed around with cars for many years. I have even blue printed an engine (fitter-turner by trade) in my time. I really do appreciate your wise words and no doubt your good intentions. The thing is, I really want to do something different for me. Normally I would of stuck to 17s or even pushed it to 18s but I have never had a car with 19s and it does look sooooooo FAT. A look I wanted for this new project of mine. then I reckon go for it, you will be ok, just be mindfull of the above point and get it all set up correctly, ie dont just slap wheels on and leave it at that, get it all checked out and setup correctly....good luck Quote Link to comment Share on other sites More sharing options...
andrew7 Posted June 1, 2006 Share Posted June 1, 2006 Shouldn't the offset be 35-42?......... New wheel bearings shortly?............ Quote Link to comment Share on other sites More sharing options...
Guest GeordieBoyKel Posted June 1, 2006 Share Posted June 1, 2006 I was told that the offset can change with deep dish wheels... Quote Link to comment Share on other sites More sharing options...
normore1 Posted June 1, 2006 Share Posted June 1, 2006 The problem is that your offset is too small. Running 19's is not the problem with the interference it's the offset. Another issue is that your tire aspect ration should have been dropped to 30 to compensate for the extra inch of rim diameter. 275-30 x 19 (not 275-35) is the correct tire for proper height and circumference on the Supra. The extra tire height will cause slower acceleration (higher gearing) and about and 4% speed error. The higher sidewall could also be contributing to the interference. Quote Link to comment Share on other sites More sharing options...
andrew7 Posted June 1, 2006 Share Posted June 1, 2006 I was told that the offset can change with deep dish wheels... No I don't think that applies mate... Quote Link to comment Share on other sites More sharing options...
supratoy Posted June 2, 2006 Share Posted June 2, 2006 If its just catching the arches then narrower tyres will help(but you loss grip) or as normore1 said- get the 275*30 might help, you could just raise the suspension(if you have coilover, but wont look as good) or buy harder suspension(cost alot of money), or get some neg camber on the rear (will need new tyres more often). yeah offset will affect you dish. If your really wana keep them, hope some off the above info will help. Quote Link to comment Share on other sites More sharing options...
Need4Speed Posted June 2, 2006 Share Posted June 2, 2006 You have the wrong rims. If your tyres are catching at all it will only be a matter of time before you lose a tyre and hit something. Quote Link to comment Share on other sites More sharing options...
Soop Dogg Posted June 3, 2006 Share Posted June 3, 2006 You really should have used a tyre size calculator. There's plenty available all over the internet. When you increase rim diameter, you need to reduce the profile to keep the overall diameter of the tyre/rim package as close as possible to the stock measurements. Stray too far from the stock measurements and you will end up with an inaccurate speedo/odometer and as said above, where you cange the offset, you can also add load to bearings/suspesion/steering components and as you have discovered, you ca interfere with the arches. I have used 275/35/18 in the past which is pretty close to stock, but a 35 profile on a 19" wheel will be way out. Check this out: http://www.miata.net/garage/tirecalc.html Quote Link to comment Share on other sites More sharing options...
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