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Help With Tire Size For Ksport Lowering Springs
In the old days I just cut springs to get the desired stance but I will admit that I am not a super skilled mechanic and I don't want to hurt my Pearl and want to do it right.
I just ordered new rims the same size I have now 20 x 8.5 I know that some will say that I should go 22" but I just don't want big wheels. Anyway, I want to lower Pearl with some springs that someone keeps telling me to get... Cough..Julio...Cough and the tire size that I have is 245 45 20. This is the tallest tire I could go with my 20's to try to fill the gap. The question is if anyone knows if I am going to ok with these or do I need to get 245 40 20. My tire guy said to ask the manufacturer of the spring kit the max tire size recommended which I asked the seller and they did not have that info. The back wheels look like they will be ok but I am worried about the front which looks like it will be close once everything settles. I was also told that when turning I might have an issue. I believe the formula for this is that the max diameter should not exceed 28.5" and no wider than 10" but I am hoping that someone out there knows the magic answer before I order the tires.What I might end up doing is lowering it on the wheels and tires that I have now so that if there is rubbing I know to get the 245 40 20 Please Help!! Thanks! |
go to this site, http://1010tires.com/TireSizeCalculator.asp and get the exact differences and that will give you a better idea on your space. i would think that it wouldn't be an issue, especially with 8.5 width wheels. the only issue i would think of, is the front upper arm bolt. i just shaved mines down a little and no issues.
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I was told about a tire size comparison calculator (Thanks Jimmy) and the size that I was sold 2 years ago turns out to be just a tad over the reccomended max size and I haven't had any trouble so far...*shrug*
Below is a side by side comparison from the stock 215/65/17 and 245/45/20 as well as the overall diameter of the 40 series. Thanks Jimmy. so far I have learned a lot in a short amount of time. I am liking this site already. Stock Tire - 215/65R17 >Search Tires Tire 1 - 245/45R20 >Search Tires Section Width: 8.46 in 215 mm Section Width: 9.64 in 245 mm Rim Diameter: 17 in 431.8 mm Rim Diameter: 20 in 508 mm Rim Width Range: 6 - 7.5 in Rim Width Range: 7.5 - 9 in Overall Diameter: 28.00 in 711.2 mm 215/65/17 (stock) Overall Diameter: 28.68 in 728.47 mm 245/45/20 (current setup) Overall Diameter: 27.71 in 703.83 mm 245/40/20 Sidewall Height: 5.50 in 139.7 mm Sidewall Height: 4.34 in 110.23 mm Radius: 14.00 in 355.6 mm Radius: 14.34 in 364.23 mm Circumference: 87.96 in 2234.1 mm Circumference: 90.10 in 2288.5 mm Revs per Mile: 742.8 Revs per Mile: 725.2 Actual Speed: 60 mph 100 km/h Speedometer1: 58.5 mph 97.6 km/h Speedometer Difference: - Speedometer Difference: 2.426% too slow Diameter Difference: - Diameter Difference: 2.38% |
Another standard size for the srt was 255/45-20, which gives it a slight increase in diameter for stock setup and something you can compare it to.
Glad I could help. Let me know if I can help with anything else. |
Springs are here but I need a new floor jack and some jack stands. I was hoping to have the springs installed this weekend but I'll probably just pay someone to install since I work 12 hours a day. Pics coming soon.
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yeah, the fronts aren't too difficult, but the rears can be pita. keep us posted and don't forget the pix. thanks!
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Ok...I got her dropped today. These pics are crappy and my Pearl is dirty so I apologize. I just wanted to share. The KSport springs are good quality and are way better than stock. I am not 100% happy with the rear as it only dropped about 1.25 right now so I have a slight rake. I will fix it if it doesn't even out.
Front Before http://i232.photobucket.com/albums/e...rontBefore.jpg Rear Before http://i232.photobucket.com/albums/e...RearBefore.jpg Front After http://i232.photobucket.com/albums/e...FrontAfter.jpg Rear After http://i232.photobucket.com/albums/e.../RearAfter.jpg Overall look. http://i232.photobucket.com/albums/e...s/Dropped1.jpg Better pics soon. After looking at the pics, the rear isn't too bad now...It must have settled a little more driving back to work. *shrug* Thanks for all the help. Watch for the new tires and wheels getting mounted very soon. |
way better Phil!!! B R A V O!!!
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Congrats! Looks killer now bro! Btw, don't worry she'll drop at least a 1/4 to 1/2 when it settles.! Congrats again!
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