need help from all the tyre gurus - Page 2

01-16-2014 | 09:35 PM

#26

mr747

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c63

Charlie do you think with 255 30 19 pss will work??

I really want the PSS tyre im happy to go from 265 to 255 but i want to keep the spacers

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01-16-2014 | 10:11 PM

#27

Jasonoff

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From: Kitchener, ON

2010 C63 AMG

Quote:

Originally Posted by charliekay

Here is the specs of the 265/35/18 vs 265/30/19.

The tread width of the 265/30/19 is 10in vs 10.1in for the 265/35/19.

Tread width difference of 1/10th of an inch is 2.54mm which could be the difference between rubbing or not.

Remember the profile of the tyre makes a difference.

This is not saying that the 265/30/19 will work 100%, just saying that just because the 265/35/18 doesn't, doesn't mean the 265/30/19 won't.

Size UTQG Max Max. Tread Tire Rim Meas. Sect. Tread
Service Description Load Inflation Depth Weight Width Rim Width Width
Load Range Press. Range Width
265/35ZR18 300 AA A 1609 lbs.* 50 psi* 10/32"* 26 lbs. 9-10.5"* 9.5"* 10.7"* 10.1"*
(97Y)*XL
265/30ZR19 300 AA A 1433 lbs.* 50 psi* 10/32"* 25 lbs. 9-10"* 9.5"* 10.7"* 10"*
(93Y)*XL

You need to account for section width and sidewall height. The tread width can be a factor if it's a lot smaller than the section width which would indicate a much "rounder" transition to the sidewall and "could" account for more fender clearance.

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01-16-2014 | 10:46 PM

#28

charliekay

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Joined: Oct 2012

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C63 AMG

Quote:

Originally Posted by mr747

Charlie do you think with 255 30 19 pss will work??

I really want the PSS tyre im happy to go from 265 to 255 but i want to keep the spacers

255 should work, I haven't tried it myself but I know Matt (olszowa12) ran 255s with spacers without an issue.

Quote:

Originally Posted by Jasonoff

You need to account for section width and sidewall height. The tread width can be a factor if it's a lot smaller than the section width which would indicate a much "rounder" transition to the sidewall and "could" account for more fender clearance.

Agreed, they are all relative to each other. The section width for both are 10.7" but the 19s has a tread width of 10 vs 10.1.

Without pretending to be an expert on this topic, I would say this means that the 19s would have a more rounded sidewall since the tread width is slightly less but the same section width.

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01-16-2014 | 11:34 PM

#29

bhamg

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C63 AMG

I'm not sure why there is all this talk about section width. I'm putting the 275-shod wheels back on in two weeks. When I hit the next unavoidable dip at speed and cut some strips off the tire I'll pull over and photograph it. You'll see the strips are coming off the tread, not the side of the tire. The PSS's are crazy wide in the tread - IMO that is the problem.

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01-17-2014 | 07:47 AM

#30

Jasonoff

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From: Kitchener, ON

2010 C63 AMG

Quote:

Originally Posted by bhamg

I'm not sure why there is all this talk about section width. I'm putting the 275-shod wheels back on in two weeks. When I hit the next unavoidable dip at speed and cut some strips off the tire I'll pull over and photograph it. You'll see the strips are coming off the tread, not the side of the tire. The PSS's are crazy wide in the tread - IMO that is the problem.

Generally when "tread width" is mentioned, it's the actual contact patch. The tread still wraps around the corner to meet the sidewall. The radius/arch of that transition is a factor for fender clearance. Not to mention rim width is a factor as well since it can slightly change the shape.

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01-17-2014 | 08:01 AM

#31

Kriston

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C63 AMG

The T1R's are not a bad tire. Not as good as the PSS's. I have the PSS's on the C63 now, I had the T1R's on my previous car.

The downfall to the T1R's in my opinion is the road noise after some wear. They get horribly loud. Just my experience with them.

Either way, the T1R's are a decent tire, not that far off in terms of price compared to the PSS's. I would probably spring for the 255 wide and run a mild stretch. If memory serves me correct the contact area on the stretched 255's will come close to the 265's.

Kris

Quote:

Originally Posted by mr747

has anyone had experience with the toyo t1r tyres???

Are they good??? how do they compare to the PSS

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01-17-2014 | 09:32 AM

#32

Mort

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2012 C63;1971 280SE 3.5(Sold);2023 EQS 450 SUV 4 Matic (Wife's)

Quote:

Originally Posted by Jasonoff

From all the math I've done I think so as well. I ended up going with RE-11 because the front 245/35-19 AD08R have too low of a load rating. The 275/30-19 RE-11 has the same 10.7" section width.

You have an up angle "down the side" pic of the rear with that setup showing the clearance?

Jason check this thread out it has pics of my car with the current wheels I am running.

https://mbworld.org/forums/c63-amg-w...w-cf-lips.html

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