T-5Bandit Posted July 19, 2007 Report Share Posted July 19, 2007 wuss Sorry, I like having straight wheels. :lol: Link to comment Share on other sites More sharing options...
TheOtherWhiteMeat Posted July 19, 2007 Report Share Posted July 19, 2007 Sorry, I like having straight wheels. If you hit a pothole that is deep enough to bend a rim, it's not going to matter if you have 215s or 225s, your going to bend the rim regardless. Keeping your eyes on the road is the #1 precautionary step you can take to keep your wheels from getting damaged. Other than the fact that the 215 looks better, 225 is a bit much for an 850 on 19s as they will completely shred the fenderliners and the rear sides of the bumper cover eventually, but things should be a bit better on the s70.I've been running 19s with 215s for about a year, and drive the 850 almost every day. However, offset is very important on both cars. The Keystone XC90 style rims that I have now are ET49, corrected to 41 in the front, and corrected to 34 in the rear. Everything is fine, with only minor rubbing on the rear side of the bumper cover while high speed slight turning such as curved offramps and such. Another thing to keep in mind is that tire shoulder styles to come into play as well when clearances are as tight as they are on these cars. Link to comment Share on other sites More sharing options...
T-5Bandit Posted July 19, 2007 Report Share Posted July 19, 2007 If you hit a pothole that is deep enough to bend a rim, it's not going to matter if you have 215s or 225s, your going to bend the rim regardless. Keeping your eyes on the road is the #1 precautionary step you can take to keep your wheels from getting damaged. Other than the fact that the 215 looks better, 225 is a bit much for an 850 on 19s as they will completely shred the fenderliners and the rear sides of the bumper cover eventually, but things should be a bit better on the s70.I've been running 19s with 215s for about a year, and drive the 850 almost every day. However, offset is very important on both cars. The Keystone XC90 style rims that I have now are ET49, corrected to 41 in the front, and corrected to 34 in the rear. Everything is fine, with only minor rubbing on the rear side of the bumper cover while high speed slight turning such as curved offramps and such. Another thing to keep in mind is that tire shoulder styles to come into play as well when clearances are as tight as they are on these cars.Of course any wheel will bend if you hit a deep pothole, however that's not what I am referring too. I am talking about keeping my wheels straight with lateral run-out. You don't have hit large potholes to cause a wheel to have a wobble or lateral runout. For that matter, we are talking about cast alloy wheels, which are never perfectly true from the factory (i.e. one reason you have to balance your wheels). Maybe you have good or perfect roads where you live, but the average area does not. Running a tire that is not load rated to the weight of the car is what can lead to excessive run-out in the wheel more easily. A 215/35/19, stretched on an 8 inch wide wheel is easily going to be underrated for the weight of these cars. In addition, running an unrated tire will increase the chance of a blowout if you hit something the wrong way while driving.If you choose to run a 215/35/19, that is your preference, but please do not validate it as being as safe or providing the same protection to the wheel as with using a better rated tire as a 225/35/19.The fact is that the OP has a S70 and will have no problems running a 19" wheel with the correct offset and a 225/35, even lowered. I am lowered @ 2.5", tuck about 1/2" of tire in the front and rear, and have no rubbing issues (other than full lock) with my 19s and 225/35 tires Link to comment Share on other sites More sharing options...
exexpat Posted July 19, 2007 Report Share Posted July 19, 2007 Of course any wheel will bend if you hit a deep pothole, however that's not what I am referring too. I am talking about keeping my wheels straight with lateral run-out. You don't have hit large potholes to cause a wheel to have a wobble or lateral runout. For that matter, we are talking about cast alloy wheels, which are never perfectly true from the factory (i.e. one reason you have to balance your wheels). Maybe you have good or perfect roads where you live, but the average area does not. Running a tire that is not load rated to the weight of the car is what can lead to excessive run-out in the wheel more easily. A 215/35/19, stretched on an 8 inch wide wheel is easily going to be underrated for the weight of these cars. In addition, running an unrated tire will increase the chance of a blowout if you hit something the wrong way while driving.If you choose to run a 215/35/19, that is your preference, but please do not validate it as being as safe or providing the same protection to the wheel as with using a better rated tire as a 225/35/19.The fact is that the OP has a S70 and will have no problems running a 19" wheel with the correct offset and a 225/35, even lowered. I am lowered @ 2.5", tuck about 1/2" of tire in the front and rear, and have no rubbing issues (other than full lock) with my 19s and 225/35 tiresAn 85 or 1135lb load rating on a 3400 lb car is perfectly reasonable - given that Jim will never carry 1140 lbs of additional weight. The 1235lbs provided by an 88-rated tire do not amount to much of an increase. BTW, I ran on 84-rated tires on the 855 for 2 years without an issue and never bent a rim. ;) Link to comment Share on other sites More sharing options...
T-5Bandit Posted July 19, 2007 Report Share Posted July 19, 2007 An 85 or 1135lb load rating on a 3400 lb car is perfectly reasonable - given that Jim will never carry 1140 lbs of additional weight. The 1235lbs provided by an 88-rated tire do not amount to much of an increase. BTW, I ran on 84-rated tires on the 855 for 2 years without an issue and never bent a rim. You also decrease the capability of that load rating by stretching the tire. It is not all that reasonable when you have 2200 lbs. of that 3400lbs. sitting in the front end of the car alone, it's not like the weight is evenly distributed. Again, maybe you have great roads up there, I would never run a 215/35 84-rated tire living in Los Angeles. I would still bet if you put your old wheels on a balancer, they have some run-out on the wheels. Though it may not be excessive, I bet it's there. Link to comment Share on other sites More sharing options...
exexpat Posted July 19, 2007 Report Share Posted July 19, 2007 You also decrease the capability of that load rating by stretching the tire. It is not all that reasonable when you have 2200 lbs. of that 3400lbs. sitting in the front end of the car alone, it's not like the weight is evenly distributed. Again, maybe you have great roads up there, I would never run a 215/35 84-rated tire living in Los Angeles. I would still bet if you put your old wheels on a balancer, they have some run-out on the wheels. Though it may not be excessive, I bet it's there.The load rating in tires accomodates for unbalanced corner loads of the vehicle. The rating itself is applied by taking the GVW and dividing that number by 4. The only adjustments you need to make to the rating are when the vehicle has a higher center of gravity, putting more strain on the sidewalls in cornering, if you tow trailors or if you occasionally carry heavy payloads (as in pickup trucks). Furthermore, stretching a tire slightly does not reduce the load capacity of the tire. If this were the case, the engineers at TUeV in Germany would not allow these cars to be licensed and driven at speeds frequently exceeding 100mph. Link to comment Share on other sites More sharing options...
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