Steviepc7 said:i actually saw one a few days ago the first ss ive seen
Changing to a larger tire and rim does in fact decrease you accel. Just depends on the amount you change them. Much easier to spin a smaller tire and wheel than a larger one, particuarly the wheel. That's one reason that dragsters use that itty-bitty rim on the drive tires. With the small change from the Ion to the Cobalt, it should be noticable only to a stopwatch.XeroState said:I don't know if tire size makes a difference in acutual speed, but I do know that changing the tire size can screw your spedo and tach if you don't adjust them (or get a bigger rim and a lower profile tire so they are the same size as stock). But what I was wondering is that in Canada (maybe North Amercia), if a car can reach speeds higher than what the factory rubber can handle (tire speed rating) than a governer must be in place. Since our cars have 'Z' rated tires, we do not have this governer. I was wondering if the cobalts do, since they have all-season's on them (not sure of the speed rating tho).
No, they're out there, just a couple right now, rarer than our Redlines, not for long though. There are a few pics on the Cobalt forums of people taking delivery and Blu_Redline posted a pic of his sitting next to a Cobalt SS on the dealer's lot, so they are out there.TXRLU said:are you sure it was an SS?? I read somewhere that they're having difficulties w/releasing those as well. Will the 18" wheels give it a higher top speed? I've always heard different stories as to the addition of bigger wheel/tire combo as to whether it will help with acceleration or top end and have never heard it explained well. Anyone have a good explaination on the relationship between bigger wheel/tire combos and acceleration and top speed?
The rules are the same in the US and Canada in that respect.XeroState said:"Tires - P215/45R18 all-season performance" right from GM site. 'R' rating is only to approx. 106 MPH which the car can easily hit and surpass. So by the canadian law it requires a governer (again I am not sure of the US).
*My bad, I believe I read the speed rating wrong, if so would someone please inform me on how to read it properly (a friend told me the 'R' isn't the speed rating, but doesn't know how to read it properly....which doesn't help me any)*
TXRLU said:Size: 215/45WR18 is actually the complete tire size for the Cobalt SS, the W has a speed rating of 168 mph 270 km/h Exotic Sports Cars. The R designates that it is a Radial tire. Below is a good link for anyone wanting a degree in Tireology[\QUOTE]
Thanks for updating me, I figured something was wrong with my logic (I am a math and computer wise, but otherwise I actually have to learn )
I've heard something about there being different ratios in the 5-speed gearbox in the Cobalt SS. I've been digging around to find out what the ratios are between the two cars, but I'm not having much luck. Anyone know?schmidty9497 said:Halla Back if any ya'll have raced any style cobalt. I need to know if i will have my ass handed to me at Rogers ville next week.