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I would like to hear all your opinions, if i got prostar 15x8 and 15x3.5 and some nitto 275/50/15 tires would my et be worse than if i ran 16" salad shooters and 245/50/16 nittos? thanks everyone, i just wanna make sure the 15s wont hurt my et since they are so wide [img]smile.gif[/img]
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Longtubes, true duals, ram air, caspers tps tec, ls1 26lb injectors, supersix powerpack, heads milled .020, comp cam .507 220/224 114 ls, forged internals and chromeoly pushrods, bored .030 over, tb spacer, tranny built with stiffer springs and kevlar bands, bigger servo, transgo stage 3 shift kit, edge 3600 stall, 1 pc aluminum ds, 3.73 superior gears, lsd rear ,custom pcm tuning, walbro 255 in tank, -
Good question.
According to a tire/wheel size calculator, they both have a smaller diameter than the stock tires, so either will give you a slightly lower gearing. The 15" is 1.4% lower than stock. The 16" will be 2.1% lower.
The 15" will be about 1.2 inches wider than the 16". You could run slightly lower pressure in the wider tire and get a bigger footprint with not as much flex as the narrower tire at the same pressure.
A given psi, should always give the same overall footprint, no matter what tire size. It's just shaped differently. A wide tire will have a wider and shorter footprint. A narrower tire will have a narrower and longer footprint (the longer footprint means the tire has to flex more, in order to keep the front and the back of the tire down flat on the ground.)
Depends on which you need the most: more traction, or less rolling resistance.
How is your traction now? The best tire would probably be the smallest width that you can get by with. (plus the most pressure you can get by with)\'98 A4 Camaro v6->v8 conversion, and STS kit next<br />v6: 13.6 Powerdyne, 13.2 150 shot, 13.8 120 shot, 14.3 85 shot, 15.7 stock<br />v8(na): 12.18@113, 392rwhp<br />Moderator on <a href=\"http://www.mtfba.org\" target=\"_blank\">www.mtfba.org</a> and <a href=\"http://www.frrax.com\" target=\"_blank\">www.frrax.com</a> (Road Race & Autocross)<br /><a href=\"http://community.webshots.com/user/johnduncan10\" target=\"_blank\">Car pics</a>, <a href=\"http://www.trscca.com\" target=\"_blank\">TN Region SCCA</a> -
If you stay N/A stay with a 16 X 8 rim with a 245 50 16 nittoRace car - gone but not forgotten - 1997 firebird V6
nitrous et & mph: 12.168 & 110.95 mph, n/a 13.746 & 96.38 mph
2013 Dodge Challenger SRT8: 12.125, 116.45
2010 Ford Taurus SHO: no times yetComment
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What kind of power are you looking to put out? If oyu already have both sets, why not try the 245s first since they will produce less friction down the track and if they do not work go bigger. Though I do not really see the need for 275s on 15s, those are pretty big.Comment
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<blockquote>quote:</font><hr>Originally posted by 12secondv6:
If you stay N/A stay with a 16 X 8 rim with a 245 50 16 nitto<hr></blockquote>
why do you say this? magnus ran 275/50/15 with his n/a car i know he had n20 but even after he stopped running it he used the 275.Longtubes, true duals, ram air, caspers tps tec, ls1 26lb injectors, supersix powerpack, heads milled .020, comp cam .507 220/224 114 ls, forged internals and chromeoly pushrods, bored .030 over, tb spacer, tranny built with stiffer springs and kevlar bands, bigger servo, transgo stage 3 shift kit, edge 3600 stall, 1 pc aluminum ds, 3.73 superior gears, lsd rear ,custom pcm tuning, walbro 255 in tank,Comment
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With all those engine and exhaust mods in your sig, plus the higher stall converter and 3.73 gears, you might need the wider tire after all...
But the question, about will the wider tire hurt the overall e.t., you may just have to try both, to know for sure.\'98 A4 Camaro v6->v8 conversion, and STS kit next<br />v6: 13.6 Powerdyne, 13.2 150 shot, 13.8 120 shot, 14.3 85 shot, 15.7 stock<br />v8(na): 12.18@113, 392rwhp<br />Moderator on <a href=\"http://www.mtfba.org\" target=\"_blank\">www.mtfba.org</a> and <a href=\"http://www.frrax.com\" target=\"_blank\">www.frrax.com</a> (Road Race & Autocross)<br /><a href=\"http://community.webshots.com/user/johnduncan10\" target=\"_blank\">Car pics</a>, <a href=\"http://www.trscca.com\" target=\"_blank\">TN Region SCCA</a>Comment
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