Tire Size Question, PLEASE HELP!
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Driver
Joined: Sep 2006
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From: CA
Tire Size Question, PLEASE HELP!
I know this topic has been addressed time after time, and I have spent the past few days researching the issue. I have searched the forum and still get mixed messages in the proper fitment.
I have my mind set on the Asanti AF-128 staggered.
If anyone has any feedback on these wheels, I would greatly appreciate it before I make my purchase. I know some members had vibration and other issues with Asantis while others say Asantis are great.
There will be no modifying of the fenders, and I want to stay away from rubbing issues. This is a daily driver, and my family rides in it as well. I'm trying to keep the ride quality and want the road noise to a minimum.
Specs:
2006 Lexus GS300 RWD
Lowered on Tein CST
20" Asanti AF-128 Chrome
Front 20x9
Rear 20x10
I would like to try out the Nitto INVO tires (for staggered wheels)
Many members recomend:
For the Fronts:245/35/20 or 235/35/20 while others say 245/30 or a 255/30 max.
For the Rears: 275/30/20 and some even said they wished they went with 285
My local tire shop says to use:
Front: 245/35/20
Rear: 275/30/20
What offset should I go with? Or should I leave that to Asanti when they go and build the wheel? Many members are running 20x8.5 in the front, will I have any issues with running 9? and the rears, 10 should be ok?
Thank you for all your expertise and advice in advance.
I have my mind set on the Asanti AF-128 staggered.
If anyone has any feedback on these wheels, I would greatly appreciate it before I make my purchase. I know some members had vibration and other issues with Asantis while others say Asantis are great.
There will be no modifying of the fenders, and I want to stay away from rubbing issues. This is a daily driver, and my family rides in it as well. I'm trying to keep the ride quality and want the road noise to a minimum.
Specs:
2006 Lexus GS300 RWD
Lowered on Tein CST
20" Asanti AF-128 Chrome
Front 20x9
Rear 20x10
I would like to try out the Nitto INVO tires (for staggered wheels)
Many members recomend:
For the Fronts:245/35/20 or 235/35/20 while others say 245/30 or a 255/30 max.
For the Rears: 275/30/20 and some even said they wished they went with 285
My local tire shop says to use:
Front: 245/35/20
Rear: 275/30/20
What offset should I go with? Or should I leave that to Asanti when they go and build the wheel? Many members are running 20x8.5 in the front, will I have any issues with running 9? and the rears, 10 should be ok?
Thank you for all your expertise and advice in advance.
i will answer quick. it's my opinions, some might not agree but here you go
1) if you go 245/35 and 275/30, you will most likely rub, especially in the front. that has to do with the overall diameter. if you don't want any rubbing, go with 245/30 and 275/25. but that's more like rubber band, so it's your call
2) i wouldn't use 255 on 9, that's too fat imho. and same with 285, i think that's too fat for 10, especially on nitto tires
offset, if you want "safe", i say 9+40 and 10 +45. that should be pretty safe. you are not as flush to fender, but that's the compromise
3) 9 is fine. 8.5 is on the narrow side imho anyway.
1) if you go 245/35 and 275/30, you will most likely rub, especially in the front. that has to do with the overall diameter. if you don't want any rubbing, go with 245/30 and 275/25. but that's more like rubber band, so it's your call
2) i wouldn't use 255 on 9, that's too fat imho. and same with 285, i think that's too fat for 10, especially on nitto tires
offset, if you want "safe", i say 9+40 and 10 +45. that should be pretty safe. you are not as flush to fender, but that's the compromise
3) 9 is fine. 8.5 is on the narrow side imho anyway.
Lead Lap
Joined: Dec 2005
Posts: 720
Likes: 0
From: CA
You could actually go with 245/30/20 in the front and 285/25/20 in the rear. These tire sizes could actually yield the same rolling as a stock 245/40/18 (25.9"). Back in early 2006 there was a black GS430 in Florida that did it with Tanabe DF210's and it looked good! For some reason I noticed that tire manufacturers are specifiying to use 285/25/20 with 20x10.5" wheels, I am not sure why they specify that width when a 285/30/20 could be used between 9.5-10.5" widths? 245/35/20 and 275-285/30/20 will yield around 26.5-26.8" rolling diameters (+1" rolling diameter from stock).
Thread Starter
Driver
Joined: Sep 2006
Posts: 108
Likes: 0
From: CA
i will answer quick. it's my opinions, some might not agree but here you go
1) if you go 245/35 and 275/30, you will most likely rub, especially in the front. that has to do with the overall diameter. if you don't want any rubbing, go with 245/30 and 275/25. but that's more like rubber band, so it's your call
2) i wouldn't use 255 on 9, that's too fat imho. and same with 285, i think that's too fat for 10, especially on nitto tires
offset, if you want "safe", i say 9+40 and 10 +45. that should be pretty safe. you are not as flush to fender, but that's the compromise
3) 9 is fine. 8.5 is on the narrow side imho anyway.
1) if you go 245/35 and 275/30, you will most likely rub, especially in the front. that has to do with the overall diameter. if you don't want any rubbing, go with 245/30 and 275/25. but that's more like rubber band, so it's your call
2) i wouldn't use 255 on 9, that's too fat imho. and same with 285, i think that's too fat for 10, especially on nitto tires
offset, if you want "safe", i say 9+40 and 10 +45. that should be pretty safe. you are not as flush to fender, but that's the compromise
3) 9 is fine. 8.5 is on the narrow side imho anyway.
If i go 245/35 and 275/30, i will most likely rub, then why would a tire shop recomend that size?
Thanks for your help,
More advice, comments, suggestions, etc would greatly be appreciated.
Members that already walked this path, please chime in with your suggestions and input.
Thanks again CL
Lead Lap
Joined: Dec 2005
Posts: 720
Likes: 0
From: CA
With the 30 series in front and 25 series in back, the rubber would be so thin, yea like rubber bands, my ride quality would probably suffer alot right?
If i go 245/35 and 275/30, i will most likely rub, then why would a tire shop recomend that size?
Thanks for your help,
More advice, comments, suggestions, etc would greatly be appreciated.
Members that already walked this path, please chime in with your suggestions and input.
Thanks again CL
If i go 245/35 and 275/30, i will most likely rub, then why would a tire shop recomend that size?
Thanks for your help,
More advice, comments, suggestions, etc would greatly be appreciated.
Members that already walked this path, please chime in with your suggestions and input.
Thanks again CL
As far as offset goes, as long as the wheel mfg. knows what vehicle it's going on it should be okay. I have no idea what the offsets of my wheels are and iforged doesn't share that information.
if you go from 35/30 to 30/25, ride will definitely suffer. now how much worse, it's hard to say. depends on your tolerance, etc... i am just giving you info in perspective. another thing about 30/25 is that the rim has less protection so technically it's more likely to bend. but of course that depends on your driving habits too
shops recommend tires with their own reason, i would say ride and potential bent rims are two big reasons.
shops recommend tires with their own reason, i would say ride and potential bent rims are two big reasons.
Thread Starter
Driver
Joined: Sep 2006
Posts: 108
Likes: 0
From: CA
Nardeezy
I see in your sig that your running a 285 in the rear, do you have any issues with rubbing? did you have any custom work done to your quarter panel lip?
Any issues in the front with the 245/35 on Dunlops?
I see in your sig that your running a 285 in the rear, do you have any issues with rubbing? did you have any custom work done to your quarter panel lip?
Any issues in the front with the 245/35 on Dunlops?
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Lead Lap
Joined: Dec 2005
Posts: 720
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From: CA
My tires rub in the front. Mainly during turns when backing out of a parking space. When the suspension bottoms out it will rub a little in the front as well. I did not modify anything. I think most if not all of the rubbing is the tire with the wheel well plastic lining. Although my tires sometimes rub it's not a dig deal.
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I think the 245/30 is the safest bet as rominl stated. The 275/30 will be a little fatter than the 245/30,, but it still looks good. The 285/25 will fit, but the profile will be rubberband thick. I am running H techs right now so the drop is minimal. I could probably get away with 245/35, but I dont like the fact I could have rubbing with people in the car, and the fact that the side wall height is thicker than the rear. It looks awkward to me when the front tire is larger in diameter than the rear
PS
I am not saying you will have the same prob that I had, but I ordered a set of custom AF128's and had nothing but vibration problems. The set they made for me had three of the four wheels defective. they were out of round. I returned them and discount tire had to eat them. Im not saying dont order the wheels, all I am saying is make sure you have an out in terms of return policy or buy them from a wheel specialty shop that can take them apart and reassemble them if there is a prob. They are some gorgeous wheels though. I would post some pics but I just got a new apple computer and have no idea how to work this thing yet. kinda quirky in its set up. If you want to see pics of the car goto car domain.com. Its under 2007 lexus GS350. Its a dark blue GS
PS
I am not saying you will have the same prob that I had, but I ordered a set of custom AF128's and had nothing but vibration problems. The set they made for me had three of the four wheels defective. they were out of round. I returned them and discount tire had to eat them. Im not saying dont order the wheels, all I am saying is make sure you have an out in terms of return policy or buy them from a wheel specialty shop that can take them apart and reassemble them if there is a prob. They are some gorgeous wheels though. I would post some pics but I just got a new apple computer and have no idea how to work this thing yet. kinda quirky in its set up. If you want to see pics of the car goto car domain.com. Its under 2007 lexus GS350. Its a dark blue GS
Last edited by I8ABMR; May 9, 2008 at 11:59 PM.
245/35 has much closer sidewall to 275/30 (85.75 vs 82.5). those should be the matching sizes front and rear. 245/30 and 275/30 (73.5 vs 82.5) aren't matching diameters at all... 245/35 is only 3mm thicker than 275/30, but 245/30 is 9mm thinner...
if you want to talk about perfect match, from pure tire size, 245/35 with 285/30, or 235/35 with 275/30, or 245/30 with 285/25
profile number is a ratio
if you want to talk about perfect match, from pure tire size, 245/35 with 285/30, or 235/35 with 275/30, or 245/30 with 285/25
profile number is a ratio
Thread Starter
Driver
Joined: Sep 2006
Posts: 108
Likes: 0
From: CA
I8ABMR: Thanks for chiming in. I think I read your post about those ASANTI's giving you vibration problems. I was hoping you would come in here and give me your advice and expierience. I hope I dont get a defective set! Im going to go with a local shop, just in case something goes wrong, I have somewhere to bring it back to.
All this tire size stuff is confusing
You are currently running 245/30/20 and 275/30/20. How is the ride quality in your opinion? Are you rubbing anywhere? And with your expierience today with those sizes, would you change to another size?
I dont want to jump into this blind and not be happy in the long run.
Thanks to all that have posted advice, please keep them coming!
ROMINL: what would you do in my situation? Sounds like you have alot of expierience. Thanks
All this tire size stuff is confusing
You are currently running 245/30/20 and 275/30/20. How is the ride quality in your opinion? Are you rubbing anywhere? And with your expierience today with those sizes, would you change to another size?
I dont want to jump into this blind and not be happy in the long run.
Thanks to all that have posted advice, please keep them coming!
ROMINL: what would you do in my situation? Sounds like you have alot of expierience. Thanks
for you on the drive, i would probably suggest 245/35 and 275/30. both overspec (larger diameter), you might rub when you turn your wheel or on dips, but after a while you will rub holes and rubbing will be gone. no big deals imho.
this is especially important if ride quality is of your concern. 245/30 and 285/25 is going to be real rubber bands, it's not for everyone
this is especially important if ride quality is of your concern. 245/30 and 285/25 is going to be real rubber bands, it's not for everyone
Lead Lap
Joined: Dec 2005
Posts: 720
Likes: 0
From: CA
for you on the drive, i would probably suggest 245/35 and 275/30. both overspec (larger diameter), you might rub when you turn your wheel or on dips, but after a while you will rub holes and rubbing will be gone. no big deals imho.
this is especially important if ride quality is of your concern. 245/30 and 285/25 is going to be real rubber bands, it's not for everyone
this is especially important if ride quality is of your concern. 245/30 and 285/25 is going to be real rubber bands, it's not for everyone
Thread Starter
Driver
Joined: Sep 2006
Posts: 108
Likes: 0
From: CA
Great, Another obstacle! 
So I'm taking CL members advice,
Was planning on going with 245/35 in the front and 275/30 in the rear.
I picked out the wheel, and tire size, but I wanted to go with the NEW Nitto INVO Series tires,
They have the fronts in 245/35 in INVO,
but they do NOT have the REARS in 275/30.
Nitto INVO's come in: 275/35 or 285/30 for the rear.
What should I do? I've read some great reviews on the INVOs and really want to go with that tire.
If I use the 275/35, looks like it will be too fat and will rub with passengars in the back, will the 285/30 be too wide? or really stretched? If those two are my only options, what would be the better one?
Thanks again for everyones input.
So I'm taking CL members advice,
Was planning on going with 245/35 in the front and 275/30 in the rear.
I picked out the wheel, and tire size, but I wanted to go with the NEW Nitto INVO Series tires,
They have the fronts in 245/35 in INVO,
but they do NOT have the REARS in 275/30.
Nitto INVO's come in: 275/35 or 285/30 for the rear.
What should I do? I've read some great reviews on the INVOs and really want to go with that tire.
If I use the 275/35, looks like it will be too fat and will rub with passengars in the back, will the 285/30 be too wide? or really stretched? If those two are my only options, what would be the better one?
Thanks again for everyones input.
