johnc Posted January 6, 2006 Share Posted January 6, 2006 Can you fit 285's with the stock style struts & springs, or will you need to do a Coil Over conversion? Ding, ding, ding, ding! We have a winner! Congratulations Ed, you have asked the dumbest question of the week here on HybridZ. And for that, you get this: http://forums.hybridz.org/search.php? Quote Link to comment Share on other sites More sharing options...
Ed260Z Posted January 6, 2006 Share Posted January 6, 2006 Ding, ding, ding, ding! We have a winner! Congratulations Ed, you have asked the dumbest question of the week here on HybridZ. And for that, you get this: http://forums.hybridz.org/search.php? OOOOOOOuuuuccchhhhhh!!!!!!! That hurts man. LOL:redface: Quote Link to comment Share on other sites More sharing options...
johnc Posted January 6, 2006 Share Posted January 6, 2006 BTw... the answer to your question is: no. Quote Link to comment Share on other sites More sharing options...
S15 200sx owner Posted January 8, 2006 Author Share Posted January 8, 2006 Awesome, Thanks for the run down John! It makes sence to me. So do you think running 9.5-10" wheels all round is quite acceptable then? Is that white car one of yours? Very nice, if so what are the wheel/tire sizes on that? Quote Link to comment Share on other sites More sharing options...
johnc Posted January 8, 2006 Share Posted January 8, 2006 White car was mine. I ran 275/45-16 tires on 16 x 10 wheels. Also, try not to run a tire taller then 25" unless you relocate the front LCA inner mount. Quote Link to comment Share on other sites More sharing options...
Supra510 Posted January 8, 2006 Share Posted January 8, 2006 285/30/18's are the widest/shortest tire out there right now. At least that you can find on a regular basis. They are between 24.7 to 24.9 inches depending on the manufacturer. That is equivalent to the a 245/40/17 which is also 24.7 inches tall. Anthony http://www.cardomain.com/ride/674663 Quote Link to comment Share on other sites More sharing options...
S15 200sx owner Posted January 9, 2006 Author Share Posted January 9, 2006 White car was mine. I ran 275/45-16 tires on 16 x 10 wheels. Also, try not to run a tire taller then 25" unless you relocate the front LCA inner mount. Thanks John! You are a wealth of knowledge on this forum, we all appreciate your input. Quote Link to comment Share on other sites More sharing options...
S15 200sx owner Posted January 9, 2006 Author Share Posted January 9, 2006 285/30/18's are the widest/shortest tire out there right now. At least that you can find on a regular basis. They are between 24.7 to 24.9 inches depending on the manufacturer. That is equivalent to the a 245/40/17 which is also 24.7 inches tall. Anthony http://www.cardomain.com/ride/674663 Thanks Ant. Quote Link to comment Share on other sites More sharing options...
majik16106 Posted January 12, 2006 Share Posted January 12, 2006 Ideally' date=' you need: Formula A 0.788 mm of tire for every 1 hp Tire Width = .788 X HP Fromula B 28.6 mm of tire for every inch of rim Rim width = Tire width / 28.6 All formulas according Cyrus, for use on RWD. Remember the first word "Ideally", before anyone responds about what they can get away with.[/quote'] That sounds wierd to me, i need lehman help, so according to that formula, everything being equal or whatever, for 500hp i need 394mm of tire? a 395/40/17.. i dont think so. there has to be a point where adding an extra 10-20mm of width doesnt do crap, and its all about the compound/tread/sidewall. John- please tell me why i'm wrong and dumb? Quote Link to comment Share on other sites More sharing options...
johnc Posted January 12, 2006 Share Posted January 12, 2006 You're not wrong or dumb. I don't agree with the formulas because tire width is not as important as tire compound. For a perfect example look at top fuel dragsters. Using the formula above: 6,500 horsepower * .788mm = 5,122mm (16.8 FEET). If I recall a lane on a drag strip is about 30' wide so the 33.5' of tire width the formula calculates means the dragster is going to take out the starter and the tree. Quote Link to comment Share on other sites More sharing options...
JMortensen Posted January 12, 2006 Share Posted January 12, 2006 Wow! There's a good argument! Quote Link to comment Share on other sites More sharing options...
iaconsultants Posted January 12, 2006 Share Posted January 12, 2006 About 18 years ago I had a 77 280Z. I flared all four fenders and had 245-40-14s on the front and 295-50-15s in the rear and did not do coil overs. The car handeled very well with the limited adjustments that I could do on caster and chamber. The thing that most people seem to forget about tires is that the foot print area stays the same with the same compound tire so if you run skinny tires the foot print will be long (front to back on the car) and short (side to side on the car). This also means that if you are running wider tires then your front to back length of foot print will shorten and your side to side foot print will get wider. So realize the area of contact stays virtually the same for the same compound tire but the foot print dimensions change. this might help some of you realize how tire sizes also make a differnce weather you are racing on a road track, oval track, 1/4 mile strip or trying to go mudding. If you want some interesting thoughts, think about the jeeps thye used during the Korean and Vietnam wars. The tires where tall, skinny, and had deeper tread. This was to make it easier to gain traction through mud and wet land. They would slide sideways a lot but they would go forward. Just thought you guys might find that interesting. Quote Link to comment Share on other sites More sharing options...
S15 200sx owner Posted January 12, 2006 Author Share Posted January 12, 2006 You're not wrong or dumb. I don't agree with the formulas because tire width is not as important as tire compound. For a perfect example look at top fuel dragsters. Using the formula above: 6' date='500 horsepower * .788mm = 5,122mm (16.8 FEET). If I recall a lane on a drag strip is about 30' wide so the 33.5' of tire width the formula calculates means the dragster is going to take out the starter and the tree.[/quote'] Now that was funny!!! Quote Link to comment Share on other sites More sharing options...
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